California Warblers: A Comprehensive Guide to Species Identification, Songs, and Fascinating Facts
Unveiling the Multitude of Warbler Species in California: A Photographic and Descriptive Handbook, Featuring Audio Recordings of their Melodies and Engaging Tidbits, and Much More!
Warblers, those spirited migratory songsters traversing vast distances from the depths of South America to their breeding grounds as far as Canada, captivate with their vibrant hues, dashing through the skies in a dazzling display of yellow and green, accompanied by a symphony of diverse melodies.
Renowned as wood-warblers, these North American avian gems predominantly inhabit woodland and forested areas, their vibrant presence often leading to the development of the notorious “warbler neck,” a painful ailment resulting from prolonged tree-gazing with binoculars in search of these elusive creatures.
While warblers primarily subsist on insects, they occasionally grace backyard feeders, indulging in seeds and mealworms. Delve deeper into the avian realm by discovering other bird species commonly observed in California and avail yourself of a complimentary identification chart.
This guide serves as a valuable resource for identifying regularly occurring warbler species in California, meticulously compiled using real-time data from avid bird watchers on ebird and reliable avibase sources, offering invaluable insights into the optimal moments for sighting these feathered wonders.
Warblers Inhabit California All Year:
– Orange-crowned Warbler
– Common Yellowthroat
– Black-throated Gray Warbler
– Lucy’s Warbler
– Ovenbird
– Hooded Warbler
Warblers Thrive in California Summers:
– Wilson’s Warbler
– Yellow Warbler
– Hermit Warbler
– MacGillivray’s Warbler
– Yellow-breasted Chat
– Blackpoll Warbler
Warblers Seek Refuge in California Winters:
– Yellow-rumped Warbler
– Townsend’s Warbler
– Nashville Warbler
– Black-throated Green Warbler
– Bay-breasted Warbler
– Kentucky Warbler
Warblers Grace California During Migration:
– Palm Warbler
– Black-and-white Warbler
– American Redstart
– Chestnut-sided Warbler
– Northern Waterthrush
– Tennessee Warbler
– Northern Parula
– Blackburnian Warbler
– Magnolia Warbler
– Virginia’s Warbler
– Black-throated Blue Warbler
– Canada Warbler
– Prothonotary Warbler
Unintentional Guests: Accidental Warblers in California:
– Prairie Warbler
– Grace’s Warbler
– Pine Warbler
– Worm-eating Warbler
– Cape May Warbler
– Yellow-throated Warbler
– Mourning Warbler
– Blue-winged Warbler
– Golden-winged Warbler
– Louisiana Waterthrush
– Connecticut Warbler
– Cerulean Warbler
Melodious Notes: A Symphony of Warbler Chirps
One often hears warblers before laying eyes upon them, making familiarity with their unique melodies a key to identification. Fortunately, certain warbler songs possess distinctive characteristics that aid recognition.
Describing their songs as buzzing, clear, or trilling, warblers exhibit varying pitch fluctuations, producing a harmonious medley. The buzz resonates with an insect-like tone, the clear note resembles a melodious whistle, while the trill, a rapid succession of notes, defies individual discernment.
Immerse yourself in the auditory realm of warblers by exploring this guide to 13 easily recognizable warbler songs.
Buzzy Melodies:
– Black-throated Blue Warbler’s song ascends with a buzz
– Prairie Warblers’ songs buzz and rise
– Black-throated Green Warblers’ songs are also buzzy, punctuated by clear notes in the middle
– Blackpoll Warblers’ songs are clear and unwavering, reminiscent of insect buzz
– Prairie Warblers’ songs buzz while ascending in pitch
– Palm Warblers’ songs reverberate with a buzzing tone
Songs with Clear Notes:
– Common Yellowthroats’ songs consist of rising and falling note sequences that repeat
– Ovenbirds emit a series of rising and falling notes
– Hooded Warblers produce distinct clear notes
– Chestnut-sided Warblers’ songs comprise a cascade of clear, descending notes that accelerate towards the end
– Yellow-rumped Warblers generate a series of clear notes that gradually fade away
– Yellow Warblers’ songs accelerate in tempo
– Northern Parulas’ songs feature a trilling rise, concluding with a unique note akin to a full stop
– Wilson’s Warblers’ songs encompass a series of descending clear notes that accelerate
1. Yellow-rumped Warbler
Yellow-rumped Warblers predominantly grace California during the winter season, while some even spend their breeding period in the northern regions of the state. They manifest in approximately 48% of winter checklists and 5% of summer checklists submitted by avid bird enthusiasts.
Sporting gray plumage adorned with flashes of yellow on the face, sides, and rump, as well as white wings, these charismatic birds exude a touch of femininity, with females displaying a tinge of brown. In winter, they assume a paler brown shade, accentuated by bright yellow rumps and sides, eventually transitioning back to vibrant yellow and gray during spring.
Featuring two subspecies, the Myrtle Warbler hails from the eastern United States and Canadian boreal forests, lacking the yellow throat, while Audubon’s Warbler represents the western counterpart, boasting additional white in its wings.
Setophaga coronata
Length: 4.7-5.5 inches (12-14 cm)
Weight: 0.4-0.5 ounces (12-13 g)
Wingspan: 7.5-9.1 inches (19-23 cm)
Yellow-rumped Warblers primarily breed in Canada, the Rockies, and the Appalachian mountains. During migration, they traverse the Midwest before wintering in the southern and southwestern regions of the United States, along the Pacific Coast, Mexico, and Central America.
These delightful creatures inhabit coniferous forests, particularly during the breeding season. In winter, they can be found in open areas abundant with fruiting shrubs. Their diet predominantly consists of insects during summer and migration, transitioning to a fruit-centric menu encompassing bayberries and wax myrtles during winter.
Yellow-rumped Warbler Song:
Listen to their enchanting song at www.xeno-canto.org/602699, courtesy of Christopher McPherson (XC602699).
Female Yellow-rumped Warblers construct nests within conifer trees using twigs, pine needles, and grass, which they line with soft grass, moss, and animal hair. The females lay up to six eggs, requiring approximately two weeks for hatching and an additional two weeks for the fledglings to leave the nest.
To attract Yellow-rumped Warblers to your backyard, entice them with sunflower seeds, suet, raisins, and peanut butter.
Fun Fact: Yellow-rumped Warblers form colossal flocks, sometimes comprising thousands of individuals, during winter. They fiercely defend their territory against intruding species.
2. Orange-crowned Warbler
Orange-crowned Warblers grace northern California during their breeding season, their population swelling as migration unfolds. Some individuals remain even during winter. These captivating birds appear in roughly 11% of summer checklists, 8% of winter checklists, and up to 23% of checklists throughout migration.
Unlike their vibrant counterparts, Orange-crowned Warblers don a more modest yellow-olive plumage, with the Pacific Coast population showcasing a touch more yellow. Their elusive orange crown remains a rare sight. Male and female birds possess identical appearances, while juveniles exhibit a grayer hue.
Leiothlypis celata
Length: 4.3-5.5 inches (11-14 cm)
Weight: 0.3-0.4 ounces (7-11 g)
Wingspan: 7.5 inches (19 cm)
Orange-crowned Warblers breed in Canada and western regions of the United States before embarking on migration to the Pacific Coast, East Coast, Gulf Coast, and Mexico. During migration, they traverse nearly all states except for the northeastern region.
These enchanting birds frequent shrubs, low vegetation, and open woodlands, with a particular affinity for breeding in such environments. Their diet primarily revolves around spiders and insects like caterpillars and flies. Additionally, they relish fruits, berries, and seeds, often making visits to backyard feeders.
Orange-crowned Warbler Song:
Embark on an auditory journey by listening to their melodious song at www.xeno-canto.org/671865, courtesy of Paul Marvin (XC671865).
Nests of Orange-crowned Warblers are constructed near or on the ground, crafted from dead leaves, twigs, and stems, and adorned with a lining of soft grass and animal hair. These dexterous females lay up to six eggs.
To attract Orange-crowned Warblers to your yard, provide suet, peanut butter, or hummingbird feeders filled with sugar water nectar.
Fun Fact: Orange-crowned Warblers demonstrate an intriguing affinity for sipping sap from sapsuckers’ and woodpeckers’ sapwells.
3. Common Yellowthroat
Common Yellowthroats make California their home year-round, yet they are more prevalent during migration periods from April to June and September to December. These captivating creatures grace approximately 11% of summer checklists and 8% of winter checklists in the state.
Small in size, these songbirds exhibit brownish backs and bright yellow undersides, accompanied by long tails. The males sport distinctive black masks, while the intensity of their yellow plumage may vary across different geographical regions. Females often display a more olive hue beneath their feathers.
Geothlypis trichas
Length: 4.3-5.1 inches (11-13 cm)
Weight: 0.3-0.3 ounces (9-10 g)
Wingspan: 5.9-7.5 inches (15-19 cm)
Common Yellowthroats spend their summers breeding across a vast expanse of North America, excluding Alaska and northern Canada. While some remain along the Gulf Coast and Pacific Southwest throughout the year, others embark on a southern migration during winter.
These charming birds can be found in marshy areas, wetlands, and brushy fields, often dwelling within dense, tangled vegetation.
Common Yellowthroat Song:
Embark on a melodic adventure by listening to their alluring song at www.xeno-canto.org/629250, courtesy of Paul Marvin (XC629250).
Nests of Common Yellowthroats are meticulously crafted by females near the ground in marshy habitats, bolstered by reeds. Comprising grass, sedges, and a platform of leaves and grass, these nests boast a soft grass and animal hair lining. Each female lays up to six eggs, which hatch within a span of approximately twelve days, followed by an additional two weeks for the fledglings to abandon the nest.
To attract Common Yellowthroats to your backyard, offer dense shrubs, thorny thickets, and water sources such as bird baths.
Fun Fact: Common Yellowthroats possess an amusing habit of feigning injury or death to distract predators from their nests.
4. Wilson’s Warbler
Wilson’s Warblers are commonly sighted in California during the breeding season, with their numbers peaking during migration in May and September. They can be found in approximately 13% of summer checklists and up to 25% of checklists during migration.
These small, vibrant warblers boast round bodies and bright yellow plumage. Male Wilson’s Warblers exhibit a large black cap, while females display a smaller black cap.
Cardellina pusilla
Length: 3.9-4.7 inches (10-12 cm)
Weight: 0.2-0.3 ounces (5-10 g)
Wingspan: 5.5-6.7 inches (14-17 cm)
Breeding primarily occurs in Canada, Alaska, and northwestern regions of the United States. During migration, they can be observed across all states, excluding the northeastern region. In winter, they migrate to Mexico and Central America.
These delightful birds can be found along streams, amidst thickets, and near forest edges, where they tirelessly forage for insects, larvae, and spiders.
Wilson’s Warbler Song:
Experience the enchanting melody of Wilson’s Warbler by listening to their song at www.xeno-canto.org/561438, courtesy of Thomas G. Graves (XC561438).
Nests of Wilson’s Warblers are cleverly concealed high up in trees. Females construct the nests using bark, grass, moss, and plant material, lining them with soft grass and animal hair. They lay around five eggs, requiring approximately eleven days for incubation and an additional ten days for the fledglings to leave the nest.
To attract Wilson’s Warblers to your backyard, provide native trees and shrubs, as they do not typically visit feeders.
Fun Fact: Wilson’s Warblers employ a fascinating distraction technique when faced with potential nest predators. They simulate a broken wing to lure the predator away before abruptly flying off.
5. Townsend’s Warbler
Townsend’s Warblers primarily inhabit California from August to May, with a significant presence during migration. They can be spotted in approximately 7% of winter checklists and up to 15% of checklists during migration.
These striking warblers feature black and yellow plumage. Males exhibit a black crown, cheeks, and throat, adorned with yellow eyebrows and a crescent-shaped yellow patch beneath the eye. Their wings showcase black spots on a yellow background. White bellies complete their captivating appearance.
Setophaga townsendi
Length: 4.75-5 inches (12-13 cm)
Weight: 0.3 ounces (9 g)
Wingspan: 7.5-8 inches (19-20 cm)
Townsend’s Warblers breed in western Canada, northwestern United States, and Alaska. During migration, they can be observed along the Pacific Coast, Mexico, and Central America.
These delightful birds prefer tall, dense coniferous forests in coastal and mountainous regions, favoring areas with pine, oak, alder, madrones, and laurels.
Townsend’s Warbler Song:
Delight in the melodious song of Townsend’s Warbler by listening at www.xeno-canto.org/710935, courtesy of Paul Marvin (XC710935).
Nests of Townsend’s Warblers are often situated on top of branches in trees, constructed from grass, bark, moss, and lined with feathers and animal hair. They lay up to five eggs.
Fun Fact: Townsend’s Warblers exhibit an intriguing behavior known as “hybridization” with Hermit Warblers, where female Townsend’s Warblers prefer to mate with male Hermit Warblers, but not vice versa.
6. Yellow Warbler
Yellow Warblers grace California mainly from April to October, with a significant presence during migration. They can be found in up to 10% of summer checklists and up to 21% of checklists during migration.
These small, vibrant warblers boast bright yellow plumage with a yellow-green back. Male Yellow Warblers feature chestnut streaks on their breasts. Females and juveniles are not as bright and lack the streaks.
Setophaga petechia
Length: 4.7-5.1 inches (12-13 cm)
Weight: 0.3-0.4 ounces (9-11 g)
Wingspan: 6.3-7.9 inches (16-20 cm)
Yellow Warblers embark on long-distance migrations, breeding in Canada and the United States (except for southeastern states) before journeying to Central and South America for winter. During migration, they can be observed in southeastern U.S. states.
These delightful birds can be found in habitats near streams, wetlands, and thickets, where they actively forage for insects, including caterpillars, midges, beetles, bugs, and wasps.
Yellow Warbler Song:
Immerse yourself in the delightful song of the Yellow Warbler by listening at www.xeno-canto.org/662546, courtesy of Richard E. Webster (XC662546).
Nests of Yellow Warblers are typically located in small trees or shrubs, constructed using bark, grass, and plant material intricately woven into a cup shape. The nests are then lined with softer materials like hair, feathers, and plant down. They lay up to seven eggs, which require around twelve days to hatch, followed by an additional ten days for the young to leave the nest.
To attract Yellow Warblers to your backyard, provide suet, oranges, peanut butter, and plants with berries. Additionally, planting native species that attract insects without the use of pesticides and maintaining a natural, somewhat untidy environment can be enticing. Birdbaths with fountains placed near secluded vegetation also offer a sense of protection.
Fun Fact: Yellow Warblers exhibit a unique nesting behavior when confronted with parasitic cowbirds. If they detect cowbird eggs in their nests, Yellow Warblers build a new nest on top of the old one, effectively starting anew up to six times!
7. Black-throated Gray Warbler
Black-throated Gray Warblers primarily spend the breeding season in northern California, with a few individuals remaining during winter. However, they are most commonly observed during migration.
These charming warblers showcase black and white streaked plumage, with a gray back and a yellow spot in front of the eyes. Males possess more extensive black throat patches than females.
Setophaga nigrescens
Length: 4.3-5.1 inches (11-13 cm)
Weight: 0.3-0.3 ounces (7-10 g)
Wingspan: 7.5-7.8 inches (19-19.7 cm)
Black-throated Gray Warblers breed in western and south-central U.S. states, as well as the coast of British Columbia. During migration, they migrate to Mexico for winter.
These delightful birds can be found searching for insects on trees in woodlands and shrubs.
Black-throated Gray Warbler Song:
Delight in the captivating song of the Black-throated Gray Warbler by listening at www.xeno-canto.org/648117, courtesy of Paul Marvin (XC648117).
Nests of Black-throated Gray Warblers are constructed in trees by females using bark, grass, and moss. They lay up to five eggs.
Fun Fact: Despite their relatively common presence and ease of observation, Black-throated Gray Warblers remain enigmatic, with little known about their behaviors and habits.
8. Nashville Warbler
Nashville Warblers can be spotted in California mainly from April to October, as they breed in the northern regions and migrate across the rest of the state.
These delightful warblers feature predominantly yellow plumage, with a green back and a gray head adorned with a white eyering. Females and juveniles possess light-gray heads and throats without any black markings. They all boast grayish-white chests, yellow breasts, and under-tail areas.
Leiothlypis ruficapilla
Length: 4.3-5.1 inches (11-13 cm)
Weight: 0.2-0.5 ounces (6.7-13.9 g)
Wingspan: 6.7-7.9 inches (17-20 cm)
Nashville Warblers breed in northeastern U.S. states, Canada, and a smaller population exists in northwestern U.S. states and British Columbia. During migration, they can be observed throughout most states.
These charming birds can be found in scrubby habitats, low deciduous forests, and areas with dense vegetation, where they actively hunt for insects.
Nashville Warbler Song:
Enjoy the melodious song of the Nashville Warbler by listening at www.xeno-canto.org/512262, courtesy of Peter Ward and Ken Hall (XC512262).
Nests of Nashville Warblers are built close to the ground in marshy areas, supported by reeds. They are made from grass and sedges woven into a cup shape, often placed on a platform of leaves and grass. They lay around five eggs, requiring approximately twelve days of incubation.
To attract Nashville Warblers to your backyard during winter in southern U.S. states, provide suet.
Fun Fact: During their initial migration, Nashville Warblers follow the Atlantic Coast, but subsequent migrations take them inland.
9. Hermit Warbler
Hermit Warblers primarily breed in northern California, with some individuals observed during migration across the rest of the state. They are most commonly sighted from April to October.
These captivating warblers exhibit bright yellow heads, with males boasting black throats and females displaying less-defined black throats. Juveniles possess gray throats. They all feature grayish-white chests and bellies, two white wingbars, and gray backs.
Setophaga occidentalis
Length: 5 inches (13 cm)
Weight: 0.3 ounces (9 g)
Wingspan: 7.75 inches (20 cm)
Hermit Warblers breed on the West Coast and migrate to Mexico and Central America for winter.
These delightful birds can be found among high pine, Douglas-fir, spruce, and coniferous trees. In winter, they move to pine-oak forests.
Hermit Warblers actively forage on the ground, hopping or flying low to search for insects such as beetles and caterpillars. They possess the remarkable ability to hang upside down from branches to probe under leaves for larvae and pupae.
Hermit Warbler Song:
Listen to the enchanting song of the Hermit Warbler at www.xeno-canto.org/150324, courtesy of Bobby Wilcox (XC150324).
Nests of Hermit Warblers are concealed in thick shrubs, usually positioned between one to five feet above the ground. Some nests may even be placed on the ground within tall weeds and ferns. They are constructed using weed stems, barks, and dry grass. Females lay three to six eggs, which they incubate for approximately eleven days.
Fun Fact: The naming of Hermit Warblers was subject to debate. Dr. W. MacGillivray, a friend
of Audubon, proposed the name “hermit” due to their solitary habits, while Audubon suggested “olivaceous” for their olive-colored backs. Ultimately, MacGillivray’s name prevailed.
10. MacGillivray’s Warbler
MacGillivray’s Warblers can be observed in California from April to October, with their breeding range primarily in the northern regions and migration occurring throughout the state.
These enchanting warblers exhibit predominantly gray plumage, with a black mask across the eyes and a yellow throat. Males possess a dark bluish-gray back, while females exhibit an olive-green back. They both feature white bellies.
Geothlypis tolmiei
Length: 4.3-5.1 inches (11-13 cm)
Weight: 0.3-0.4 ounces (8-11 g)
Wingspan: 6.7-7.5 inches (17-19 cm)
MacGillivray’s Warblers breed in western U.S. states, western Canada, and a small portion of northeastern states. During migration, they can be found across most states.
These delightful birds inhabit shrubby areas, thickets, and forests near water, where they actively forage for insects, spiders, and berries.
MacGillivray’s Warbler Song:
Enjoy the captivating song of the MacGillivray’s Warbler at www.xeno-canto.org/186220, courtesy of Richard E. Webster (XC186220).
Nests of MacGillivray’s Warblers are built on the ground, usually under shrubs or in dense vegetation. They are constructed using grass, moss, leaves, bark, and twigs, forming a cup shape. Females lay three to six eggs, requiring approximately 12 days for incubation.
Fun Fact: MacGillivray’s Warblers are named after William MacGillivray, a Scottish naturalist and ornithologist who collaborated with John James Audubon on his famous bird illustrations.
11. Blackpoll Warbler
Blackpoll Warblers primarily pass through California during migration, with sightings mainly occurring in April and May.
These charming warblers exhibit striking black and white plumage, with males showcasing black crowns and white cheeks. Females possess black caps, but their cheeks are gray. During non-breeding season, both males and females exhibit duller colors.
Setophaga striata
Length: 4.7-5.1 inches (12-13 cm)
Weight: 0.4-0.5 ounces (11-14 g)
Wingspan: 7.5-8.7 inches (19-22 cm)
Blackpoll Warblers breed in northern North America, from Alaska to Newfoundland, and migrate to northern South America for winter.
These delightful birds primarily inhabit coniferous forests and spruce bogs, often near water bodies.
Blackpoll Warblers actively forage for insects, spiders, and larvae among tree branches, often hanging upside down to reach their prey.
Blackpoll Warbler Song:
Listen to the melodic song of the Blackpoll Warbler at www.xeno-canto.org/612446, courtesy of Patrick Kelley (XC612446).
Nests of Blackpoll Warblers are constructed on the ground or low in shrubs, made from grass, bark, moss, and lichens, forming a cup shape. They lay up to five eggs, which require around 11-12 days of incubation.
Fun Fact: Blackpoll Warblers embark on one of the longest migrations of any songbird, flying nonstop for approximately 1,800 miles (2,900 km) over the Atlantic Ocean to reach their wintering grounds in South America.
12. Chestnut-sided Warbler
Chestnut-sided Warblers can be observed in California mainly during migration, with sightings occurring in April and May.
These lovely warblers feature bright yellow plumage, with a white breast and a distinctive chestnut-colored patch on their sides. Males possess bold black streaks on their caps, while females exhibit lighter, olive-colored caps.
Setophaga pensylvanica
Length: 4.7 inches (12 cm)
Weight: 0.3-0.4 ounces (8-11 g)
Wingspan: 7.5-8.7 inches (19-22 cm)
Chestnut-sided Warblers breed in northeastern U.S. states, southeastern Canada, and the Great Lakes region. They migrate through California and winter in Central America.
These delightful birds inhabit deciduous forests, thickets, and edges of wetlands, where they actively forage for insects, caterpillars, and spiders.
Chestnut-sided Warbler Song:
Listen to the melodious song of the Chestnut-sided Warbler at www.xeno-canto.org/199179, courtesy of J.R. Rigby (XC199179).
Nests of Chestnut-sided Warblers are built close to the ground, constructed from bark strips, grass, and plant fibers, forming a cup shape. They lay up to five eggs, requiring around 11-12 days for incubation.
Fun Fact: The Chestnut-sided Warbler is known for its distinct song, which is often described as sounding like “pleased, pleased, pleased to meet you.”
13. Bay-breasted Warbler
Bay-breasted Warblers primarily pass through California during migration, with sightings occurring mainly in April and May.
These captivating warblers exhibit a unique plumage combination of reddish-brown on their heads, necks, and upper chests, gradually fading to a grayish-white belly. Males possess darker, redder plumage, while females display lighter colors.
Setophaga castanea
Length: 4.7 inches (12 cm)
Weight: 0.3-0.4 ounces (9-11 g)
Wingspan: 7.5-8.7 inches (19-22 cm)
Bay-breasted Warblers breed in boreal forests of Canada and Alaska and migrate through California, reaching their wintering grounds in northern South America.
These delightful birds inhabit spruce and fir forests, often foraging in the treetops for insects, spiders, and caterpillars.
Bay-breasted Warbler Song:
Experience the beautiful song of the Bay-breasted Warbler at www.xeno-canto.org/615988, courtesy of Mike Nelson (XC615988).
Nests of Bay-breasted Warblers are built on the ground, typically situated near the base of a shrub or tree. They are constructed using grass, moss, bark, and plant fibers, forming a cup shape. Females lay four to five eggs, which require around 11-12 days of incubation.
Fun Fact: The plumage of Bay-breasted Warblers changes significantly between seasons. In winter, they exhibit a more subdued plumage, with less distinct reddish-brown coloring, making them more challenging to identify.
14. Blackburnian Warbler
Blackburnian Warblers primarily pass through California during migration, with sightings occurring in April and May.
These striking warblers feature vibrant orange throats, heads, and chests, contrasting with black backs and wings. Females possess duller plumage with yellowish underparts.
Setophaga fusca
Length: 4.3 inches (11 cm)
Weight: 0.3 ounces (8 g)
Wingspan: 7-7.5 inches (18-19 cm)
Blackburnian Warblers breed in coniferous and mixed forests of northeastern U.S. states and southeastern Canada. They migrate through California and winter in Central and northern South America.
These delightful birds inhabit the upper canopy of trees, often foraging among the foliage for insects, spiders, and larvae.
Blackburnian Warbler Song:
Listen to the captivating song of the Blackburnian Warbler at www.xeno-canto.org/598670, courtesy of Tim Spahr (XC598670).
Nests of Blackburnian Warblers are built high in coniferous trees, constructed from bark strips, grass, and plant fibers, forming a cup shape. They lay three to five eggs, requiring around 11-12 days of incubation.
Fun Fact: The Blackburnian Warbler is known for its distinctive high-pitched song, often described as a series of “zee-zee-zee-zoo-zee” notes, which can be heard echoing through the forest canopy.
15. Palm Warbler
Palm Warblers can be observed in California mainly during migration, with sightings occurring in spring and fall.
These charming warblers exhibit a mix of brown, yellow, and gray plumage. They possess a yellow undertail, a yellow throat, and a brownish cap. During breeding season, they showcase more vibrant chestnut-colored caps.
Setophaga palmarum
Length: 4.7-5.5 inches (12-14 cm)
Weight: 0.3-0.4 ounces (9-11 g)
Wingspan: 7-8 inches (18-20 cm)
Palm Warblers breed in the boreal forests of Canada and Alaska and migrate through California, reaching their wintering grounds in the southeastern United States, the Caribbean, and Central America.
These delightful birds inhabit open woodlands, marshes, and areas with low vegetation, often foraging on the ground for insects, spiders, and seeds.
Palm Warbler Song:
Listen to the pleasant song of the Palm Warbler at www.xeno-canto.org/142169, courtesy of J.R. Rigby (XC142169).
Nests of Palm Warblers are built on or near the ground, typically concealed under a clump of grass or low shrubs. They are constructed using grass, leaves, and plant fibers, forming a cup shape. Females lay four to five eggs, which require around 12-13 days of incubation.
Fun Fact: Palm Warblers get their name from their tendency to wag their tails up and down while foraging on the ground, resembling the wagging motion of a palm leaf in the wind.
16. Black-and-white Warbler
Black-and-white Warblers primarily pass through California during migration, with sightings occurring in spring and fall.
These striking warblers exhibit a unique black and white striped pattern on their plumage, resembling a zebra. They have a black crown and a white belly. Females have less contrast in their plumage.
Mniotilta varia
Length: 4.3-5.1 inches (11-13 cm)
Weight: 0.3-0.4 ounces (8-11 g)
Wingspan: 7-7.5 inches (18-19 cm)
Black-and-white Warblers breed in eastern North America, from the Great Lakes region to northeastern U.S. states and southeastern Canada. They migrate through California and winter in southern Florida, the Caribbean, and Central America.
These agile birds forage by creeping along tree trunks and branches, probing crevices for insects, spiders, and larvae.
Black-and-white Warbler Song:
Listen to the distinctive song of the Black-and-white Warbler at www.xeno-canto.org/548706, courtesy of Ethan Duke (XC548706).
Nests of Black-and-white Warblers are built on or near the ground, typically hidden in leaf litter or beneath fallen logs. They are constructed using grass, leaves, moss, and bark, forming a cup shape. Females lay four to five eggs, requiring around 10-12 days of incubation.
Fun Fact: The Black-and-white Warbler is known for its unique foraging behavior of “creeping” along tree trunks and branches, similar to a nuthatch or woodpecker.
17. American Redstart
American Redstarts can be observed in California during migration, with sightings occurring in spring and fall.
These vibrant warblers feature a combination of black and bright orange plumage. Males have striking black and orange patterns, with black on the head and back and orange on the sides and belly. Females have duller plumage, with grayish-green upperparts and yellowish underparts.
Setophaga ruticilla
Length: 4.3-5.1 inches (11-13 cm)
Weight: 0.3-0.4 ounces (8-11 g)
Wingspan: 6.7-8.3 inches (17-21 cm)
American Redstarts breed in northeastern and north-central U.S. states and southeastern Canada. They migrate through California and winter in Central and northern South America.
These active and acrobatic birds forage by actively flicking their wings and tail, capturing insects mid-air or from foliage.
American Redstart Song:
Listen to the melodious song of the American Redstart at www.xeno-canto.org/464255, courtesy of Liza Cabrera (XC464255).
Nests of American Redstarts are built low in shrubs or trees, typically hidden within vegetation. They are constructed using grass, bark, leaves, and plant fibers, forming a cup shape. Females lay three to five eggs, requiring around 10-12 days of incubation.
Fun Fact: The American Redstart is known for its unique “startle display” behavior, in which it rapidly fans its tail and flashes its brightly colored plumage, potentially startling predators or attracting their attention away from the nest.
18. Chestnut-sided Warbler
Chestnut-sided Warblers can be observed in California during migration, with sightings occurring in spring and fall.
These lovely warblers feature bright yellow plumage, with a white breast and a distinctive chestnut-colored patch on their sides. Males possess bold black streaks on their caps, while females exhibit lighter, olive-colored caps.
Setophaga pensylvanica
Length: 4.7 inches (12 cm)
Weight: 0.3-0.4 ounces (8-11 g)
Wingspan: 7.5-8.7 inches (19-22 cm)
Chestnut-sided Warblers breed in northeastern U.S. states, southeastern Canada, and the Great Lakes region. They migrate through California and winter in Central America.
These delightful birds inhabit deciduous forests, thickets, and edges of wetlands, where they actively forage for insects, caterpillars, and spiders.
Chestnut-sided Warbler Song:
Listen to the melodious song of the Chestnut-sided Warbler at www.xeno-canto.org/199179, courtesy of J.R. Rigby (XC199179).
Nests of Chestnut-sided Warblers are built close to the ground, constructed from bark strips, grass, and plant fibers, forming a cup shape. They lay up to five eggs, requiring around 11-12 days for incubation.
Fun Fact: The Chestnut-sided Warbler is known for its distinct song, which is often described as sounding like “pleased, pleased, pleased to meet you.”
19. Northern Waterthrush
Northern Waterthrushes primarily pass through California during migration, with sightings occurring in spring and fall.
These medium-sized warblers have brownish upperparts, streaked with black, and white underparts with bold black streaks on the breast and flanks. They have a long, pinkish bill and pink legs.
Parkesia noveboracensis
Length: 5.1-5.9 inches (13-15 cm)
Weight: 0.4-0.6 ounces (11-17 g)
Wingspan: 7.5-9.1 inches (19-23 cm)
Northern Waterthrushes breed in the boreal forests of Canada and Alaska and migrate through California, wintering in the southeastern United States, the Caribbean, and Central America.
These lively birds inhabit wet habitats, such as marshes, swamps, and streamsides, where they walk or bob their tails while foraging for insects, larvae, and small aquatic invertebrates.
Northern Waterthrush Song:
Listen to the melodious song of the Northern Waterthrush at www.xeno-canto.org/636157, courtesy of Paul Marvin (XC636157).
Nests of Northern Waterthrushes are built on the ground, typically concealed under dense vegetation or near water. They are constructed using leaves, grass, and moss, forming a cup shape. Females lay four to six eggs, requiring around 11-14 days of incubation.
Fun Fact: The Northern Waterthrush is often found near water bodies and has a habit of vigorously wagging its tail, which helps to distinguish it from the similar-looking Louisiana Waterthrush.
20. Tennessee Warbler
Tennessee Warblers primarily pass through California during migration, with sightings occurring in spring and fall.
These small, slender warblers have olive-green upperparts, pale gray underparts, and a distinct pale eyering. Males have a slightly brighter yellow coloration on the underparts during breeding season.
Leiothlypis peregrina
Length: 4.3-4.7 inches (11-12 cm)
Weight: 0.2-0.3 ounces (6-9 g)
Wingspan: 7-7.5 inches (18-19 cm)
Tennessee Warblers breed in the boreal forests of Canada and Alaska and migrate through California, wintering in Central and northern South America.
These active birds forage among tree branches, foliage, and shrubs, capturing insects and spiders.
Tennessee Warbler Song:
Listen to the melodious song of the
Tennessee Warbler at www.xeno-canto.org/511144, courtesy of Todd Wilson (XC511144).
Nests of Tennessee Warblers are built on or near the ground, typically hidden in dense vegetation or moss. They are constructed using grass, bark, and moss, forming a cup shape. Females lay three to six eggs, requiring around 10-12 days of incubation.
Fun Fact: The Tennessee Warbler is named after the state of Tennessee, where the species was first discovered and described.
21. Northern Parula
Northern Parulas can be observed in California during migration, with sightings occurring in spring and fall.
These small warblers have blue-gray upperparts, yellow underparts, and a distinctive greenish-blue patch on their back. Males have a reddish-brown band across their chest, while females exhibit a less-pronounced band.
Setophaga americana
Length: 4.3-4.7 inches (11-12 cm)
Weight: 0.2-0.3 ounces (5-9 g)
Wingspan: 6.7-7.1 inches (17-18 cm)
Northern Parulas breed in the southeastern United States and migrate through California, reaching their wintering grounds in Florida, the Caribbean, and Central America.
These energetic birds inhabit mixed forests, woodlands, and swamps, where they forage among branches and foliage for insects, spiders, and small fruits.
Northern Parula Song:
Listen to the melodious song of the Northern Parula at www.xeno-canto.org/282053, courtesy of Andrew Spencer (XC282053).
Nests of Northern Parulas are built high in trees, typically hidden within Spanish moss or epiphytic plants. They are constructed using plant fibers, moss, and bark, forming a cup shape. Females lay three to seven eggs, requiring around 12-14 days of incubation.
Fun Fact: The Northern Parula is known for its unique “zipper song,” which resembles a rapid ascending trill and is often used during territorial disputes with other males.
22. Blackburnian Warbler
Blackburnian Warblers primarily pass through California during migration, with sightings occurring in spring and fall.
These stunning warblers exhibit vibrant orange throats and breasts, with contrasting black upperparts. They have white wingbars and a white belly. Females have slightly duller plumage.
Setophaga fusca
Length: 4.3-4.7 inches (11-12 cm)
Weight: 0.3-0.4 ounces (8-11 g)
Wingspan: 7-7.5 inches (18-19 cm)
Blackburnian Warblers breed in the coniferous and mixed forests of northeastern U.S. states and southeastern Canada. They migrate through California and winter in Central and northern South America.
These delightful birds inhabit the upper canopy of trees, often foraging among the foliage for insects, spiders, and larvae.
Blackburnian Warbler Song:
Listen to the captivating song of the Blackburnian Warbler at www.xeno-canto.org/598670, courtesy of Tim Spahr (XC598670).
Nests of Blackburnian Warblers are built high in coniferous trees, constructed from bark strips, grass, and plant fibers, forming a cup shape. They lay three to five eggs, requiring around 11-12 days of incubation.
Fun Fact: The Blackburnian Warbler is known for its distinctive high-pitched song, often described as a series of “zee-zee-zee-zoo-zee” notes, which can be heard echoing through the forest canopy.
23. Magnolia Warbler
Magnolia Warblers can be observed in California during migration, with sightings occurring in spring and fall.
These medium-sized warblers have black streaks on their yellow underparts and a black necklace across their chest. They have greenish upperparts, with bold white wingbars and a white belly.
Setophaga magnolia
Length: 4.3-5.1 inches (11-13 cm)
Weight: 0.3-0.4 ounces (8-11 g)
Wingspan: 7-7.5 inches (18-19 cm)
Magnolia Warblers breed in the boreal forests of Canada and Alaska and migrate through California, reaching their wintering grounds in the Caribbean and Central America.
These active birds forage among tree branches, shrubs, and foliage, capturing insects, spiders, and small fruits.
Magnolia Warbler Song:
Listen to the melodious song of the Magnolia Warbler at www.xeno-canto.org/278666, courtesy of Jonathon Jongsma (XC278666).
Nests of Magnolia Warblers are built on or near the ground, typically hidden in dense vegetation. They are constructed using grass, moss, and bark, forming a cup shape. Females lay four to five eggs, requiring around 10-12 days of incubation.
Fun Fact: The Magnolia Warbler is not named after the magnolia tree but rather after French botanist Pierre Magnol. The species was initially described based on a specimen collected in Mississippi, near magnolia trees.
24. Yellow Warbler
Yellow Warblers breed in California and can be observed during the summer months.
These small, vibrant warblers have bright yellow plumage, with reddish streaks on the breast and a touch of chestnut on the crown. Males possess bold black streaks on their chest, while females exhibit lighter streaks.
Setophaga petechia
Length: 4.7-5.1 inches (12-13 cm)
Weight: 0.3-0.4 ounces (9-11 g)
Wingspan: 6.7-7.9 inches (17-20 cm)
Yellow Warblers breed across North America, including California, and migrate to Central and northern South America for the winter.
These lively birds inhabit a variety of habitats, including wetlands, forests, and gardens, where they forage for insects, spiders, and small berries.
Yellow Warbler Song:
Listen to the sweet song of the Yellow Warbler at www.xeno-canto.org/496267, courtesy of Andrew Spencer (XC496267).
Nests of Yellow Warblers are built in shrubs, trees, or other vegetation, typically at eye level or higher. They are constructed using grass, bark, and plant fibers, forming a cup shape. Females lay three to six eggs, requiring around 11-12 days of incubation.
Fun Fact: The Yellow Warbler is known for its cheery and melodic song, often described as a series of “sweet, sweet, sweet, I’m so sweet” notes, which can be heard throughout its breeding range.
25. Wilson’s Warbler
Wilson’s Warblers primarily pass through California during migration, with sightings occurring in spring and fall.
These small warblers have bright yellow underparts and olive-green upperparts. Males possess a distinctive black cap, while females exhibit a lighter cap. Both genders have a yellow eyering.
Cardellina pusilla
Length: 4.3-4.7 inches (11-12 cm)
Weight: 0.2-0.3 ounces (6-9 g)
Wingspan: 6.7-7.1 inches (17-18 cm)
Wilson’s Warblers breed in western North America, including parts of California, and migrate through Central America to wintering grounds in Mexico and Central America.
These energetic birds forage close to the ground in shrubs and vegetation, actively searching for insects and spiders.
Wilson’s Warbler Song:
Listen to the melodious song of the Wilson’s Warbler at www.xeno-canto.org/415794, courtesy of Andrew Spencer (XC415794).
Nests of Wilson’s Warblers are built on or near the ground, typically hidden in dense vegetation or near water. They are constructed using grass, bark, and plant fibers, forming a cup shape. Females lay three to five eggs, requiring around 10-12 days of incubation.
Fun Fact: The Wilson’s Warbler is one of the most common warblers in the western United States, known for its vibrant yellow plumage and cheerful song.
26. Black-throated Blue Warbler
Black-throated Blue Warblers primarily pass through California during migration, with sightings occurring in spring and fall.
These medium-sized warblers exhibit striking plumage. Males have deep blue upperparts, a black throat, and a white belly. Females have more muted blue-green upperparts, a grayish throat, and a yellowish belly.
Setophaga caerulescens
Length: 4.7-5.1 inches (12-13 cm)
Weight: 0.3-0.4 ounces (9-11 g)
Wingspan: 7-7.5 inches (18-19 cm)
Black-throated Blue Warblers breed in the northeastern United States and parts of Canada, and migrate through California to wintering grounds in the Caribbean and Central America.
These agile birds forage in the lower to middle levels of trees and shrubs, searching for insects, spiders, and small fruits.
Black-throated Blue Warbler Song:
Listen to the melodious song of the Black-throated Blue Warbler at www.xeno-canto.org/657699, courtesy of Martin St-Michel (XC657699).
Nests of Black-throated Blue Warblers are typically built on the ground or in low shrubs, using leaves, grass, and plant fibers. Females lay three to four eggs, requiring around 11-12 days of incubation.
Fun Fact: Male Black-throated Blue Warblers are known for their distinctive courtship display, where they spread their wings and rapidly flick their tail while singing, showcasing their vibrant plumage.
27. Canada Warbler
Canada Warblers can be observed in California during migration, with sightings occurring in spring and fall.
These medium-sized warblers have a gray back, yellow underparts, and a distinctive necklace of black streaks on their chest. Males possess a black band across their forehead, while females exhibit a lighter band.
Cardellina canadensis
Length: 4.7-5.1 inches (12-13 cm)
Weight: 0.3-0.4 ounces (9-11 g)
Wingspan: 7-7.5 inches (18-19 cm)
Canada Warblers breed in the boreal forests of Canada and parts of the northeastern United States, and migrate through California to wintering grounds in northern South America.
These active birds forage in the understory of forests, often near water, where they feed on insects, spiders, and small fruits.
Canada Warbler Song:
Listen to the melodious song of the Canada Warbler at www.xeno-canto.org/233345, courtesy of Andrew Spencer (XC233345).
Nests of Canada Warblers are typically built on the ground or in low shrubs, using grass, moss, and plant fibers. Females lay three to five eggs, requiring around 10-12 days of incubation.
Fun Fact: The Canada Warbler is known for its unique breeding behavior, as males establish territories and build multiple nests, leaving the females to choose the nest where they will lay their eggs.
28. Prothonotary Warbler
Prothonotary Warblers can be observed in California during migration, with sightings occurring in spring and fall.
These small warblers have bright yellow plumage, with bluish-gray wings and tail. They have a relatively long bill and distinctive white undertail coverts.
Protonotaria citrea
Length: 4.7-5.1 inches (12-13 cm)
Weight: 0.3-0.4 ounces (9-11 g)
Wingspan: 7-7.5 inches (18-19 cm)
Prothonotary Warblers breed in the eastern United States and parts of Canada, and migrate through California to wintering grounds in Central America and northern South America.
These warblers prefer wetland habitats, such as swamps, marshes, and flooded forests, where they forage for insects, spiders, and small crustaceans.
Prothonotary Warbler Song:
Listen to the melodious song of the Prothonotary Warbler at www.xeno-canto.org/495944, courtesy of Andrew Spencer (XC495944).
Nests of Prothonotary Warblers are typically built in tree cavities near water, or in man-made nest boxes. They are constructed using plant fibers, moss, and bark, forming a cup shape. Females lay four to seven eggs, requiring around 12-14 days of incubation.
Fun Fact: The Prothonotary Warbler gets its name from the bright yellow robes worn by Roman Catholic papal clerks, known as prothonotaries, whose robes resemble the bird’s plumage.
29. American Redstart
American Redstarts can be observed in California during migration, with sightings occurring in spring and fall.
These small warblers exhibit a striking plumage pattern. Males have black upperparts, with bright orange patches on their wings, tail, and sides. Females have gray upperparts, with yellow patches on their wings and tail.
Setophaga ruticilla
Length: 4.3-4.7 inches (11-12 cm)
Weight: 0.3-0.4 ounces (8-11 g)
Wingspan: 6.7-7.1 inches (17-18 cm)
American Redstarts breed in northeastern North America and parts of Canada, and migrate through California to wintering grounds in Central and northern South America.
These active birds forage in the upper levels of trees and shrubs, often flicking their wings and spreading their tail, as they catch insects in mid-air or from foliage.
American Redstart Song:
Listen to the melodious song of the American Redstart at www.xeno-canto.org/538343, courtesy of Andrew Spencer (XC538343).
Nests of American Redstarts are typically built on or near the ground, hidden in dense vegetation. They are constructed using grass, bark, and plant fibers, forming a cup shape. Females lay three to five eggs, requiring around 11-12 days of incubation.
Fun Fact: The American Redstart is known for its unique hunting behavior, as it flicks its wings and fans its tail to startle insects, making them easier to catch.
30. Chestnut-sided Warbler
Chestnut-sided Warblers pass through California during migration, with sightings occurring in spring and fall.
These small warblers have a distinctive plumage. Males have bright yellow underparts, a white breast, and chestnut-colored streaks on their sides. They also have a grayish-blue crown. Females are similar but have a duller plumage.
Setophaga pensylvanica
Length: 4.7-5.1 inches (12-13 cm)
Weight: 0.3-0.4 ounces (9-11 g)
Wingspan: 7-7.5 inches (18-19 cm)
Chestnut-sided Warblers breed in northeastern North America and parts of Canada, and migrate through California to wintering grounds in Central and northern South America.
These active and energetic birds forage in the understory and lower levels of trees and shrubs, searching for insects and spiders.
Chestnut-sided Warbler Song:
Listen to the melodious song of the Chestnut-sided Warbler at www.xeno-canto.org/607135, courtesy of Andrew Spencer (XC607135).
Nests of Chestnut-sided Warblers are typically built low in shrubs or small trees, using grass, bark, and plant fibers, forming a cup shape. Females lay three to five eggs, requiring around 10-12 days of incubation.
Fun Fact: The Chestnut-sided Warbler is known for its playful behavior, often seen performing aerial acrobatics and hanging upside down from branches while foraging.
31. Northern Waterthrush
Northern Waterthrushes pass through California during migration, with sightings occurring in spring and fall.
These medium-sized warblers have a brownish-olive back and a white belly with dark streaks. They have a distinctive white stripe above the eye, extending to the back of the head.
Parkesia noveboracensis
Length: 4.7-5.1 inches (12-13 cm)
Weight: 0.3-0.4 ounces (9-11 g)
Wingspan: 7-7.5 inches (18-19 cm)
Northern Waterthrushes breed in northeastern North America and parts of Canada, and migrate through California to wintering grounds in Central and northern South America.
These warblers prefer habitats near freshwater, such as swamps, bogs, and marshes, where they forage for insects and small aquatic invertebrates.
Northern Waterthrush Song:
Listen to the melodious song of the Northern Waterthrush at www.xeno-canto.org/439759, courtesy of Andrew Spencer (XC439759).
Nests of Northern Waterthrushes are typically built on the ground, near water, in dense vegetation or under tree roots. They are constructed using grass, moss, and leaves, forming a cup shape. Females lay four to six eggs, requiring around 12-13 days of incubation.
Fun Fact: The Northern Waterthrush is often seen bobbing its tail up and down as it walks along the water’s edge, giving it a teetering motion.
32. Tennessee Warbler
Tennessee Warblers pass through California during migration, with sightings occurring in spring and fall.
These small warblers have a plain olive-green plumage, with a pale yellowish belly and a white undertail. They have a thin, pointed bill and a faint eye-ring.
Leiothlypis peregrina
Length: 4.3-4.7 inches (11-12 cm)
Weight: 0.3-0.4 ounces (9-11 g)
Wingspan: 6.7-7.1 inches (17-18 cm)
Tennessee Warblers breed in the boreal forests of Canada and parts of northeastern North America, and migrate through California to wintering grounds in northern South America.
These active birds forage in the upper levels of trees and shrubs, often hovering to catch insects in mid-air or plucking them from foliage.
Tennessee Warbler Song:
Listen to the melodious song of the Tennessee Warbler at www.xeno-canto.org/482402, courtesy of Mike Nelson (XC482402).
Nests of Tennessee Warblers are typically built on or near the ground, hidden in dense vegetation. They are constructed using grass, moss, and plant fibers, forming a cup shape. Females lay four to six eggs, requiring around 10-12 days of incubation.
Fun Fact: The Tennessee Warbler was named by Alexander Wilson, who encountered the species in Tennessee during its migration.
33. Northern Parula
Northern Parulas can be observed in California during migration, with sightings occurring in spring and fall.
These small warblers have a striking plumage. Males have a blue-gray back, a yellow throat, and a distinctive green patch on their back. They also have a black band across their chest. Females are similar but have a duller plumage.
Setophaga americana
Length: 4.3-4.7 inches (11-12 cm)
Weight: 0.2-0.3 ounces (6-8 g)
Wingspan: 6.7-7.1 inches (17-18 cm)
Northern Parulas breed in the southeastern United States and parts of Canada, and migrate through California to wintering grounds in Central and northern South America.
These energetic birds forage in the canopy of trees, often hanging upside down as they search for insects and spiders.
Northern Parula Song:
Listen to the melodious song of the Northern Parula at www.xeno-canto.org/473017, courtesy of David Darrell-Lambert (XC473017).
Nests of Northern Parulas are typically built high in trees, suspended from branches or Spanish moss. They are constructed using moss, plant fibers, and spider webs, forming a cup shape. Females lay three to seven eggs, requiring around 12-14 days of incubation.
Fun Fact: The Northern Parula is known for its distinctive call, which sounds like a rising buzzy trill, often described as a “zreee-up.”
How Frequently Warblers Are Spotted In California In Summer And Winter
In California, during the summer and winter seasons, the frequency of warbler sightings can be determined through the use of checklists. These checklists, found on ebird, reveal the most commonly observed warbler species in the state.
During the summer months, the following warbler species have been recorded on the checklists:
– Wilson’s Warbler, with a frequency of 13.9%
– Common Yellowthroat, observed at a rate of 11.5%
– Orange-crowned Warbler, documented at 11.4%
– Yellow Warbler, with a sighting rate of 10.9%
– Yellow-rumped Warbler, spotted approximately 5.7% of the time
– Yellow-breasted Chat, recorded at 3.4%
– Hermit Warbler, seen at a rate of 2.8%
– MacGillivray’s Warbler, observed at 2.7%
– Black-throated Gray Warbler, noted at 2.2%
– Townsend’s Warbler, recorded at 2.2%
– Nashville Warbler, documented at 1.8%
– Northern Parula, with a frequency of 0.2%
– Lucy’s Warbler, also at 0.2%
– American Redstart, observed at 0.1%
– Hooded Warbler, noted at 0.1%
– Black-and-white Warbler, recorded at 0.1%
– Ovenbird, spotted at 0.1%
– Tennessee Warbler, seen less than 0.1%
– Northern Waterthrush, observed less than 0.1%
– Chestnut-sided Warbler, also seen less than 0.1%
– Virginia’s Warbler, spotted less than 0.1%
– Magnolia Warbler, seen less than 0.1%
– Grace’s Warbler, observed less than 0.1%
– Kentucky Warbler, noted less than 0.1%
– Yellow-throated Warbler, documented less than 0.1%
– Palm Warbler, seen less than 0.1%
– Prothonotary Warbler, observed less than 0.1%
– Blackpoll Warbler, noted less than 0.1%
– Bay-breasted Warbler, recorded less than 0.1%
– Golden-winged Warbler, observed less than 0.1%
– Cape May Warbler, spotted less than 0.1%
– Canada Warbler, noted less than 0.1%
– Blackburnian Warbler, seen less than 0.1%
– Blue-winged Warbler, observed less than 0.1%
– Worm-eating Warbler, noted less than 0.1%
– Black-throated Blue Warbler, seen less than 0.1%
– Black-throated Green Warbler, observed less than 0.1%
– Mourning Warbler, noted less than 0.1%
– Prairie Warbler, spotted less than 0.1%
– Louisiana Waterthrush, observed less than 0.1%
– Cerulean Warbler, seen less than 0.1%
– Connecticut Warbler, observed less than 0.1%
In the winter season, the following warbler species are more commonly seen in California:
– Yellow-rumped Warbler, with a frequency of 48.5%
– Common Yellowthroat, observed at a rate of 8.7%
– Orange-crowned Warbler, documented at 8.0%
– Townsend’s Warbler, noted at 7.3%
– Black-throated Gray Warbler, spotted approximately 0.5% of the time
– Wilson’s Warbler, seen at a rate of 0.3%
– Yellow Warbler, documented at 0.3%
– Palm Warbler, observed at 0.3%
– Black-and-white Warbler, noted at 0.2%
– Nashville Warbler, recorded at 0.2%
– Hermit Warbler, spotted at 0.1%
– American Redstart, observed at 0.1%
– Northern Waterthrush, noted at 0.1%
– Lucy’s Warbler, seen at 0.1%
– Chestnut-sided Warbler, documented at 0.1%
– Northern Parula, spotted at 0.1%
– Black-throated Green Warbler, observed less than 0.1%
– Pine Warbler, noted less than 0.1%
– Worm-eating Warbler, observed less than 0.1%
– Grace’s Warbler, spotted less than 0.1%
– Prairie Warbler, seen less than 0.1%
– Ovenbird, observed less than 0.1%
– Tennessee Warbler, noted less than 0.1%
– Bay-breasted Warbler, seen less than 0.1%
– Black-throated Blue Warbler, documented less than 0.1%
– Magnolia Warbler, observed less than 0.1%
– Hooded Warbler, noted less than 0.1%
– Cape May Warbler, seen less than 0.1%
– Blackburnian Warbler, observed less than 0.1%
– Yellow-throated Warbler, noted less than 0.1%
– Yellow-breasted Chat, seen less than 0.1%
– Blue-winged Warbler, observed less than 0.1%
– MacGillivray’s Warbler, noted less than 0.1%
– Virginia’s Warbler, seen less than 0.1%
– Louisiana Waterthrush, observed less than 0.1%
– Kentucky Warbler, noted less than 0.1%
– Golden-winged Warbler, seen less than 0.1%
– Mourning Warbler, observed less than 0.1%
– Blackpoll Warbler, noted less than 0.1%
– Prothonotary Warbler, observed less than 0.1%
– Canada Warbler, noted less than 0.1%
How To Attract Warblers To Your Backyard
If you wish to attract warblers to your backyard, consider the following tips:
– If your yard is spacious enough, provide trees as a habitat for the warblers.
– Embrace a slightly untidy environment by leaving brush piles, creating a favorable habitat for insects, which serve as a food source for the birds.
– Avoid using pesticides or herbicides, as these chemicals can impact insect populations and the birds’ food availability.
– Offer a clean water source to attract warblers.
– Provide mealworms, preferably live ones, but dried ones can suffice.
– Place bird feeders with sunflower seeds, peanut hearts, and suet, which can be appealing to warblers.