This comprehensive guide will aid you in recognizing and categorizing the various warbler species that frequently visit Delaware. It provides detailed descriptions, photo identification, delightful facts, as well as audio recordings of their captivating songs.
Warblers, these petite migratory songbirds, embark on long journeys from as distant as South America to breeding grounds as far-reaching as Canada. With vibrant plumage of yellow and green, they dart energetically from their breeding habitats to wintering grounds, serenading us with a marvelous medley of melodic tunes.
North American warblers, commonly referred to as wood-warblers, predominantly inhabit woodlands and forests. However, it’s worth mentioning that you might experience what is known as “warbler neck,” a discomforting stiffness and tingling sensation in the neck that arises from gazing skyward through binoculars, eagerly trying to spot these elusive creatures amidst the treetops.
While warblers primarily subsist on insects, they occasionally visit backyard feeders in search of seeds or mealworms. Take the opportunity to explore the other bird species regularly sighted in Delaware and obtain a complimentary identification chart.
This guide serves as a valuable resource for identifying the warbler species commonly observed in Delaware, based on data collected from avid bird watchers on eBird and avibase. It offers genuine insights into the optimal times for spotting these birds in the wild.
During the summer months in Delaware, you may encounter the following warbler species: Common Yellowthroat, Yellow Warbler, Pine Warbler, Ovenbird, Black-and-white Warbler, Prairie Warbler, Yellow-breasted Chat, Louisiana Waterthrush, Yellow-throated Warbler, Worm-eating Warbler, and Kentucky Warbler.
As winter arrives, Delaware becomes home to Yellow-rumped Warblers and Orange-crowned Warblers.
During their migration periods, various warblers grace Delaware with their presence. These include the American Redstart, Northern Parula, Palm Warbler, Magnolia Warbler, Blackpoll Warbler, Black-throated Blue Warbler, Black-throated Green Warbler, Chestnut-sided Warbler, Northern Waterthrush, Blue-winged Warbler, Canada Warbler, Blackburnian Warbler, Cape May Warbler, Tennessee Warbler, Bay-breasted Warbler, Nashville Warbler, Wilson’s Warbler, Hooded Warbler, Cerulean Warbler, Mourning Warbler, Connecticut Warbler, and Golden-winged Warbler.
In total, Delaware boasts an impressive array of 35 warbler species.
Let’s explore a few of these warbler species found in Delaware:
1. Common Yellowthroat
Common Yellowthroats grace Delaware’s landscape predominantly during the breeding season, spanning from April to October. Bird watchers’ submitted checklists reveal that they are present in 38% of summer sightings within the state.
These small songbirds exhibit brownish plumage on their backs and vibrant yellow undersides, complemented by long tails. The males sport a black mask across their faces, while the intensity of the yellow hue may vary geographically, occasionally adopting an olive tone.
Scientific Name: 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 breed extensively across North America, excluding Alaska and northern Canada. Some individuals remain near the Gulf Coast and Pacific Southwest year-round, while others embark on a migratory journey southward during winter.
These charming birds often inhabit marshy or wetland areas, favoring thick, tangled vegetation.
Here’s a sample of the Common Yellowthroat’s song: [Credit: Paul Marvin, XC629250]
2. Yellow-rumped Warbler
Yellow-rumped Warblers predominantly grace Delaware during the winter season, with their numbers surging during fall migration in October. They make appearances in 11% of winter checklists and up to 46% of fall migration checklists.
These warblers exhibit a grayish plumage with vibrant yellow patches adorning their faces, sides, and rump, while their wings showcase a pristine white coloration. Female Yellow-rumped Warblers may exhibit a slightly browner hue, and winter birds don a paler brown shade, transitioning into bright yellow and gray during spring.
Scientific Name: 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 settling in southern and southwestern U.S. states, along the Pacific Coast, and extending into Mexico and Central America.
These warblers favor coniferous forests during their breeding season and open areas with fruiting shrubs in winter. Their diet primarily consists of insects during summer and shifts to predominantly fruit consumption, including bayberry and wax myrtle, during colder seasons.
Here’s a sample of the Yellow-rumped Warbler’s song: [Credit: Christopher McPherson, XC602699]
3. Yellow Warbler
Yellow Warblers make their presence known in Delaware during the breeding season, occurring in 16% of summer checklists. They arrive in April and commence their migration in October.
These small, vibrant yellow birds exhibit a yellow-green back, with males adorned by chestnut streaks on their breasts. Females and juveniles possess less vibrant plumage, lacking the characteristic streaks seen in males.
Scientific Name: 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 undertake a lengthy migration to breed in Canada and the United States, excluding southeastern states. They then embark on a journey southward to Central and South America for winter. However, they can be spotted during migration in southeastern U.S. states.
These captivating birds frequent streamside areas, wetlands, and thickets, often foraging for insects such as caterpillars, midges, beetles, bugs, and wasps.
Here’s a sample of the Yellow Warbler’s song: [Credit: Richard E. Webster, XC662546]
4. Pine Warbler
Pine Warblers primarily grace Delaware during the breeding season from March to October, with their numbers surging during spring and fall migration, while some individuals remain throughout the year.
These plump, yellow songbirds possess olive backs, white lower bellies, and gray wingbars. Females may exhibit a browner appearance with increased white on their bellies.
Scientific Name: Setophaga pinus
Length: 5.1-5.5 inches (13-14 cm)
Weight: 0.3-0.5 ounces (9-15 g)
Wingspan: 7.5-9.1 inches (19-23 cm)
Pine Warblers primarily breed in northeastern U.S. states before migrating to southeastern U.S. states. Some individuals overwinter in the southeastern U.S.
These warblers are typically found in pine forests, residing high in the trees.
They feed on a diet consisting of caterpillars, beetles, spiders, and other insects during summer, while colder weather prompts them to consume fruit and seeds.
Here’s a sample of the Pine Warbler’s song: [Credit: Christopher McPherson, XC602052]
5. American Redstart
American Redstarts make appearances during migration in Delaware, observed in up to 29% of checklists in May and September.
These captivating birds showcase a predominantly black plumage with striking orange patches and a white belly. Females, on the other hand, exhibit an olive-gray hue instead of black, coupled with yellow patches.
Scientific Name: Setophaga ruticilla
Length: 4.3-5.1 inches (11-13 cm)
Weight: 0.2-0.3 ounces (6-9 g)
Wingspan: 6.3-7.5 inches (16-19 cm)
American Redstarts breed in eastern U.S. states, Canada, and northwestern U.S. states. They can also be sighted during migration in central and western U.S. states.
These beautiful warblers frequent deciduous woodlands, where they actively feed on insects. They can also be found in backyards and thickets, relishing in the consumption of berries such as serviceberry and magnolia.
Here’s a sample of the American Redstart’s song: [Credit: Nick Kiehl, XC522368]
6. Ovenbird
Ovenbirds grace Delaware during the summer months, appearing in 14% of checklists from April to October.
These warblers may not boast vibrant plumage like their counterparts, but their olive-green backs and black-and-white spotted undersides distinguish them. They possess a unique appearance among warblers.
Scientific Name: Seiurus aurocapilla
Length: 4.3-5.5 inches (11-14 cm)
Weight: 0.6-1.0 ounce (16-28 g)
Wingspan: 7.5-10.2 inches (19-26 cm)
Ovenbirds breed in northeastern U.S. states, Canada, the Midwest, and even extend into northwest Canada. During migration, they can be spotted in eastern U.S. states. For winter, they migrate to Florida, Mexico, Central America, northern South America, and the Caribbean.
These ground-dwelling warblers can be found rummaging through leaf litter in forests, diligently searching for insects.
Here’s a sample of the Ovenbird’s song: [Credit: Christopher McPherson, XC602036]
7. Black-and-white Warbler
Black-and-white Warblers spend the breeding season in Delaware, but their numbers increase during migration. They are sighted in 7% of summer checklists and up to 23% of checklists during migration.
With their distinct striped appearance, Black-and-white Warblers are relatively easy to identify. The males possess a large black patch across their eye and cheek, exhibiting a darker black hue compared to females.
Scientific Name: Mniotilta varia
Length: 4.3-5.1 inches (11-13 cm)
Weight: 0.3-0.5 ounce (8-15 g)
Wingspan: 7.1-8.7 inches (18-22 cm)
Black-and-white Warblers breed in the eastern United States and Canada. They migrate to Florida, the Gulf Coast, Mexico, Baja California, the Caribbean, and northern South America for winter. During migration, they can be spotted in central U.S. states.
These warblers exhibit a unique foraging behavior, hopping up and down tree trunks and branches in forests, as they search for insects.
Here’s a sample of the Black-and-white Warbler’s song: [Credit: Christopher McPherson, XC600300]
8. Northern Parula
Northern Parulas make appearances during migration across Delaware, observed in up to 23% of checklists during spring migration and 17% during fall migration.
These warblers present a captivating contrast of blueish-gray and yellow. They exhibit a bluish-gray hue on their backs, accompanied by a yellow patch on their back and two white wingbars.
Scientific Name: Setophaga americana
Length: 4.3-4.7 inches (11-12 cm)
Weight: 0.2-0.4 ounce (5-11 g)
Wingspan: 6.3-7.1 inches (16-18 cm)
Northern Parulas breed in eastern U.S. states and southeastern Canada, migrating to Central America and the Caribbean for winter. Some individuals may choose to remain in southern Florida during the winter.
These delightful warblers can be spotted high up in deciduous forests, where they feed on insects.
Here’s a sample of the Northern Parula’s song: [Credit: Christopher McPherson, XC599828]
9. Palm Warbler
Palm Warblers can be spotted in Delaware during migration, specifically from April to May and September to November. They appear in up to 17% of checklists during these periods.
These warblers possess a distinct rusty red patch on the top of their heads and exhibit a browny-olive coloration throughout their bodies. Western individuals may have whiter bellies. Male and female Palm Warblers share a similar appearance during the breeding season, while non-breeding birds display duller crowns.
Scientific Name: Setophaga palmarum
Length: 4.7-5.5 inches (12-14 cm)
Weight: 0.3-0.5 ounce (7-13 g)
Wingspan: 7.9-8.3 inches (20-21 cm)
Palm Warblers primarily breed in Canada and can be observed during migration in eastern U.S. states. Some individuals choose to spend their winter in Florida and along the southeastern coast.
These warblers are commonly found in weedy fields, forest edges, and scrubby areas during spring and fall migration. They often forage on the ground alongside other bird species like Sparrows, Juncos, and Yellow-rumped Warblers, seeking out insects.
Here’s a sample of the Palm Warbler’s song: [Credit: Richard E. Webster, XC189604]
10. Magnolia Warbler
Magnolia Warblers pass through Delaware during migration in May and from August to October. They are present in up to 17% of checklists during these periods.
Male Magnolia Warblers exhibit black backs and vibrant yellow undersides. They sport black streaking that forms a “necklace” around their necks and extends over their bellies. Females, on the other hand, display a grayer hue on their backs and lack the distinctive streaking.
Scientific Name: Setophaga magnolia
Length: 4.3-5.1 inches (11-13 cm)
Weight: 0.2-0.5 ounce (6-15 g)
Wingspan: 6.3-7.9 inches (16-20 cm)
Magnolia Warblers breed across Canada and northeastern U.S. states. They can be observed during migration in the eastern U.S. They spend their winters in Central America, the Caribbean, and northern South America.
These beautiful warblers can be found perched on low branches in forests or parks, making them easier to spot during migration. They rely on insects as their primary food source.
Here’s a sample of the Magnolia Warbler’s song: [Credit: Peter Ward and Ken Hall, XC512264]
11. Blackpoll Warbler
Blackpoll Warblers pass through Delaware during migration, primarily in the spring and fall. They can be observed in up to 23% of checklists during migration.
These warblers have a striking appearance, featuring a black cap and white cheek patch. Their plumage is predominantly black and white, with a touch of yellow on their sides.
Scientific Name: Setophaga striata
Length: 4.7-5.5 inches (12-14 cm)
Weight: 0.4-0.5 ounce (11-14 g)
Wingspan: 8.7-9.4 inches (22-24 cm)
Blackpoll Warblers breed in northern North America, including Canada’s boreal forests. During migration, they undertake an incredible journey, flying over vast distances to reach their wintering grounds in northern South America.
These warblers can be found in various habitats during migration, including woodlands, parks, and gardens. They primarily feed on insects, fueling themselves for their long migratory flights.
Here’s a sample of the Blackpoll Warbler’s song: [Credit: Paul Marvin, XC602599]
12. Black-throated Blue Warbler
Black-throated Blue Warblers pass through Delaware during migration, with sightings occurring in up to 29% of checklists during spring and fall.
Male Black-throated Blue Warblers showcase a stunning combination of black and blue plumage. They possess a deep black throat and face, contrasting with their rich blue upperparts. Females have a more subdued appearance, featuring olive-brown upperparts and lighter underparts.
Scientific Name: Setophaga caerulescens
Length: 4.7-5.1 inches (12-13 cm)
Weight: 0.3-0.4 ounce (9-11 g)
Wingspan: 7.5-8.3 inches (19-21 cm)
Black-throated Blue Warblers breed in the northeastern United States and Canada. During migration, they traverse the eastern U.S. states before reaching their wintering grounds in the Caribbean and Central America.
These warblers favor dense deciduous and mixed forests during their migration, where they actively forage for insects, spiders, and small fruits.
Here’s a sample of the Black-throated Blue Warbler’s song: [Credit: Richard E. Webster, XC608621]
13. Black-throated Green Warbler
Black-throated Green Warblers migrate through Delaware, with sightings occurring in up to 17% of checklists during migration.
Male Black-throated Green Warblers exhibit a striking combination of yellow-green upperparts and a black throat and face. Their underparts are yellow, and they have distinctive white wingbars. Females have a similar coloration but with less contrast.
Scientific Name: Setophaga virens
Length: 4.7-5.5 inches (12-14 cm)
Weight: 0.3-0.4 ounce (9-12 g)
Wingspan: 7.5-8.7 inches (19-22 cm)
Black-throated Green Warblers breed in the northeastern United States and Canada. During migration, they can be observed in the eastern U.S. states. They spend the winter in the Caribbean, Central America, and northern South America.
These warblers inhabit coniferous and mixed forests during migration, where they actively search for insects, spiders, and caterpillars.
Here’s a sample of the Black-throated Green Warbler’s song: [Credit: Richard E. Webster, XC662512]
14. Chestnut-sided Warbler
Chestnut-sided Warblers pass through Delaware during migration, with sightings occurring in up to 23% of checklists during spring and fall.
Male Chestnut-sided Warblers exhibit a striking combination of yellow, white, and chestnut plumage. They possess yellow underparts with chestnut-colored streaks on their sides. Females have a more subdued appearance, featuring olive-green upperparts and pale yellow underparts.
Scientific Name: Setophaga pensylvanica
Length: 4.7-5.1 inches (12-13 cm)
Weight: 0.3-0.4 ounce (8-11 g)
Wingspan: 7.5-8.3 inches (19-21 cm)
Chestnut-sided Warblers breed in the northeastern United States and Canada. During migration, they traverse the eastern U.S. states before reaching their wintering grounds in Central and northern South America.
These warblers favor young deciduous forests and shrubby habitats during migration, where they actively feed on insects, caterpillars, and spiders.
Here’s a sample of the Chestnut-sided Warbler’s song: [Credit: Richard E. Webster, XC609173]
15. Northern Waterthrush
Northern Waterthrushes pass through Delaware during migration, with sightings occurring in up to 17% of checklists during spring and fall.
Northern Waterthrushes are larger warblers with a unique appearance. They have a distinctive white eyeline and a streaked brownish back. Their underparts are white with bold black streaks.
Scientific Name: Parkesia noveboracensis
Length: 5.1-5.5 inches (13-14 cm)
Weight: 0.5-0.6 ounce (15-17 g)
Wingspan: 7.9-9.1 inches (20-23 cm)
Northern Waterthrushes breed in the northern United States and Canada, particularly in wet forested areas. During migration, they can be observed in the eastern U.S. states. They spend the winter in the Caribbean, Central America, and northern South America.
These warblers are often found near streams, marshes, and wetlands, where they forage for insects, spiders, and small aquatic organisms.
Here’s a sample of the Northern Waterthrush’s song: [Credit: Paul Marvin, XC664010]
16. Blue-winged Warbler
Blue-winged Warblers pass through Delaware during migration, with sightings occurring in up to 14% of checklists during spring and fall.
Male Blue-winged Warblers have vibrant yellow plumage with distinct black eye patches and bluish-gray wings. Females have a more subdued appearance, featuring olive-brown upperparts and pale yellow underparts.
Scientific Name: Vermivora cyanoptera
Length: 4.7-5.1 inches (12-13 cm)
Weight: 0.3-0.4 ounce (8-11 g)
Wingspan: 7.5-8.3 inches (19-21 cm)
Blue-winged Warblers breed in the eastern United States and parts of Canada. During migration, they can be observed in the eastern U.S. states. They spend the winter in Central America and northern South America.
These warblers inhabit open woodlands, shrubby areas, and forest edges during migration. They actively feed on insects and caterpillars.
Here’s a sample of the Blue-winged Warbler’s song: [Credit: Paul Marvin, XC664014]
17. Canada Warbler
Canada Warblers pass through Delaware during migration, with sightings occurring in up to 14% of checklists during spring and fall.
Male Canada Warblers display a striking appearance, featuring a black necklace-like pattern across their yellow underparts. They have bluish-gray upperparts and a distinctive white eye-ring. Females have a more subdued appearance, with a grayish-green hue on their upperparts.
Scientific Name: Cardellina canadensis
Length: 4.7-5.1 inches (12-13 cm)
Weight: 0.3-0.4 ounce (8-11 g)
Wingspan: 7.5-8.3 inches (19-21 cm)
Canada Warblers breed in the boreal forests of Canada and parts of the northeastern United States. During migration, they traverse the eastern U.S. states. They spend the winter in northern South America.
These warblers prefer dense understory habitats, such as moist forests and swamps, during migration. They actively feed on insects, spiders, and small berries.
Here’s a sample of the Canada Warbler’s song: [Credit: Jarek Matusiak, XC528573]
18. Blackburnian Warbler
Blackburnian Warblers pass through Delaware during migration, with sightings occurring in up to 11% of checklists during spring and fall.
Male Blackburnian Warblers showcase a vibrant combination of orange throat and upper breast, contrasting with their black back and white underparts. They have a distinctive flame-like pattern on their face. Females have a more subdued appearance, featuring olive-yellow upperparts and pale yellow underparts.
Scientific Name: Setophaga fusca
Length: 4.3-4.7 inches (11-12 cm)
Weight: 0.2-0.4 ounce (6-11 g)
Wingspan: 7.1-7.9 inches (18-20 cm)
Blackburnian Warblers breed in the northeastern United States and Canada. During migration, they can be observed in the eastern U.S. states. They spend the winter in northern South America.
These warblers primarily inhabit coniferous forests during migration, where they actively forage for insects and spiders among the tree foliage.
Here’s a sample of the Blackburnian Warbler’s song: [Credit: Richard E. Webster, XC613649]
19. Cape May Warbler
Cape May Warblers pass through Delaware during migration, with sightings occurring in up to 11% of checklists during spring and fall.
Male Cape May Warblers exhibit a unique appearance, featuring a vibrant combination of yellow, black, and chestnut plumage. They have distinctive chestnut cheek patches and a yellow collar. Females have a more subdued appearance, with olive-green upperparts and pale yellow underparts.
Scientific Name: Setophaga tigrina
Length: 4.7-5.1 inches (12-13 cm)
Weight: 0.3-0.4 ounce (9-11 g)
Wingspan: 7.5-8.3 inches (19-21 cm)
Cape May Warblers breed in the boreal forests of Canada and parts of the northeastern United States. During migration, they traverse the eastern U.S. states. They spend the winter in the Caribbean, Central America, and northern South America.
These warblers are often found foraging in tree canopies, seeking out insects, especially during their time in Delaware’s coastal habitats.
Here’s a sample of the Cape May Warbler’s song: [Credit: Richard E. Webster, XC668511]
20. Tennessee Warbler
Tennessee Warblers pass through Delaware during migration, with sightings occurring in up to 11% of checklists during spring and fall.
Tennessee Warblers have a subtle appearance, featuring olive-green upperparts and pale yellow underparts. They possess a faint eye-ring and a touch of gray on their face.
Scientific Name: Leiothlypis peregrina
Length: 4.3-4.7 inches (11-12 cm)
Weight: 0.3-0.4 ounce (8-11 g)
Wingspan: 6.3-7.1 inches (16-18 cm)
Tennessee Warblers breed in the boreal forests of Canada and parts of the northeastern United States. During migration, they traverse the eastern U.S. states. They spend the winter in Central and northern South America.
These warblers favor deciduous forests, particularly those with dense undergrowth, during migration. They actively feed on insects, spiders, and small fruits.
Here’s a sample of the Tennessee Warbler’s song: [Credit: Richard E. Webster, XC615913]
21. Bay-breasted Warbler
Bay-breasted Warblers pass through Delaware during migration, with sightings occurring in up to 11% of checklists during spring and fall.
Male Bay-breasted Warblers exhibit a striking appearance, featuring a rich chestnut head and a black-streaked back. They have a yellowish wash on their underparts. Females have a more subdued appearance, with a grayish-olive hue on their upperparts.
Scientific Name: Setophaga castanea
Length: 4.7-5.1 inches (12-13 cm)
Weight: 0.3-0.4 ounce (8-11 g)
Wingspan: 7.5-8.3 inches (19-21 cm)
Bay-breasted Warblers breed in the boreal forests of Canada and parts of the northeastern United States. During migration, they can be observed in the eastern U.S. states. They spend the winter in northern South America.
These warblers favor a variety of forested habitats during migration, including both coniferous and deciduous forests. They actively forage for insects, spiders, and small fruits.
Here’s a sample of the Bay-breasted Warbler’s song: [Credit: Richard E. Webster, XC614204]
22. Nashville Warbler
Nashville Warblers pass through Delaware during migration, with sightings occurring in up to 11% of checklists during spring and fall.
Nashville Warblers have a subtle appearance, featuring olive-green upperparts and a yellow throat and underparts. They possess a gray head with a distinct white eye-ring.
Scientific Name: Leiothlypis ruficapilla
Length: 4.3-4.7 inches (11-12 cm)
Weight: 0.3-0.4 ounce (8-11 g)
Wingspan: 6.3-7.1 inches (16-18 cm)
Nashville Warblers breed in the boreal forests of Canada and parts of the northeastern United States. During migration, they traverse the eastern U.S. states. They spend the winter in Central America and northern South America.
These warblers inhabit a variety of habitats during migration, including woodlands, parks, and gardens. They actively feed on insects, spiders, and small berries.
Here’s a sample of the Nashville Warbler’s song: [Credit: Richard E. Webster, XC609184]
23. Wilson’s Warbler
Wilson’s Warblers pass through Delaware during migration, with sightings occurring in up to 11% of checklists during spring and fall.
Wilson’s Warblers have a distinct appearance, featuring bright yellow plumage with a black cap and a black eye patch. They possess a gray back and pale yellow underparts.
Scientific Name: Cardellina pusilla
Length: 4.7-5.1 inches (12-13 cm)
Weight: 0.3-0.4 ounce (8-11 g)
Wingspan: 7.5-8.3 inches (19-21 cm)
Wilson’s Warblers breed in the northwestern United States and parts of Canada. During migration, they traverse the western and central U.S. states. They spend the winter in Central America and northern South America.
These warblers inhabit a variety of habitats during migration, including moist forests, thickets, and shrubby areas. They actively feed on insects, spiders, and small fruits.
Here’s a sample of the Wilson’s Warbler’s song: [Credit: Richard E. Webster, XC614204]
24. Hooded Warbler
Hooded Warblers pass through Delaware during migration, with sightings occurring in up to 11% of checklists during spring and fall.
Male Hooded Warblers exhibit a striking appearance, featuring a vibrant yellow face and underparts with a black hood. Females have a more subdued appearance, with a grayish-olive hue on their upperparts and a yellowish wash on their underparts.
Scientific Name: Setophaga citrina
Length: 4.7-5.1 inches (12-13 cm)
Weight: 0.3-0.4 ounce (8-11 g)
Wingspan: 7.5-8.3 inches (19-21 cm)
Hooded Warblers breed in the southeastern United States and parts of the Midwest. During migration, they traverse the eastern U.S. states. They spend the winter in Central America and northern South America.
These warblers favor shrubby habitats, including forests, thickets, and swampy areas, during migration. They actively forage for insects and spiders in the lower vegetation.
Here’s a sample of the Hooded Warbler’s song: [Credit: Richard E. Webster, XC609185]
25. Cerulean Warbler
Cerulean Warblers pass through Delaware during migration, with sightings occurring in up to 11% of checklists during spring and fall.
Male Cerulean Warblers showcase a unique appearance, featuring a deep blue upperparts and a contrasting white underbelly. They possess a distinctive black necklace-like pattern across their chest. Females have a more subdued appearance, with bluish-gray upperparts and pale yellow underparts.
Scientific Name: Setophaga cerulea
Length: 4.3-4.7 inches (11-12 cm)
Weight: 0.3-0.4 ounce (8-11 g)
Wingspan: 7.1-7.9 inches (18-20 cm)
Cerulean Warblers breed in the eastern United States and parts of Canada. During migration, they traverse the eastern U.S. states. They spend the winter in northern South America.
These warblers favor mature deciduous forests during migration, particularly those with a dense canopy. They actively forage for insects, spiders, and small fruits.
Here’s a sample of the Cerulean Warbler’s song: [Credit: Richard E. Webster, XC614246]
26. Mourning Warbler
Mourning Warblers pass through Delaware during migration, with sightings occurring in up to 11% of checklists during spring and fall.
Mourning Warblers have a subtle appearance, featuring olive-green upperparts and a yellow throat and underparts. They possess a distinct black cheek patch.
Scientific Name: Geothlypis philadelphia
Length: 4.7-5.1 inches (12-13 cm)
Weight: 0.3-0.4 ounce (8-11 g)
Wingspan: 7.5-8.3 inches (19-21 cm)
Mourning Warblers breed in the boreal forests of Canada and parts of the northeastern United States. During migration, they traverse the eastern U.S. states. They spend the winter in Central and northern South America.
These warblers inhabit a variety of habitats during migration, including dense undergrowth, thickets, and shrubby areas. They actively feed on insects, spiders, and small fruits.
Here’s a sample of the Mourning Warbler’s song: [Credit: Richard E. Webster, XC609194]
27. Connecticut Warbler
Connecticut Warblers pass through Delaware during migration, with sightings occurring in up to 11% of checklists during spring and fall.
Connecticut Warblers have a subtle appearance, featuring olive-brown upperparts and a yellowish wash on their underparts. They possess a gray
head and a distinct eye-ring.
Scientific Name: Oporornis agilis
Length: 5.1-5.5 inches (13-14 cm)
Weight: 0.4-0.5 ounce (12-14 g)
Wingspan: 7.9-8.7 inches (20-22 cm)
Connecticut Warblers breed in the boreal forests of Canada and parts of the northeastern United States. During migration, they traverse the central and eastern U.S. states. They spend the winter in northern South America.
These warblers favor dense understory habitats during migration, particularly those near wet areas. They actively forage for insects and spiders in the lower vegetation.
Here’s a sample of the Connecticut Warbler’s song: [Credit: Richard E. Webster, XC614259]
28. Golden-winged Warbler
Golden-winged Warblers pass through Delaware during migration, with sightings occurring in up to 11% of checklists during spring and fall.
Male Golden-winged Warblers exhibit a distinct appearance, featuring a black throat and face, contrasting with their bright yellow plumage on the wings and underparts. They possess a white wing patch. Females have a more subdued appearance, with a grayish-olive hue on their upperparts and a pale yellow wash on their underparts.
Scientific Name: Vermivora chrysoptera
Length: 4.7-5.1 inches (12-13 cm)
Weight: 0.3-0.4 ounce (9-11 g)
Wingspan: 7.5-8.3 inches (19-21 cm)
Golden-winged Warblers breed in the northeastern United States and parts of Canada. During migration, they traverse the eastern U.S. states. They spend the winter in Central America and northern South America.
These warblers favor early successional habitats, including shrubby areas, young forests, and forest edges, during migration. They actively forage for insects and spiders in the lower vegetation.
Here’s a sample of the Golden-winged Warbler’s song: [Credit: Richard E. Webster, XC609195]
29. Painted Redstart
Painted Redstarts are rare visitors to Delaware during migration, with occasional sightings.
Painted Redstarts have a distinct appearance, featuring black upperparts and bright red underparts. They possess white patches on their wings and tails.
Scientific Name: Myioborus pictus
Length: 5.1-5.5 inches (13-14 cm)
Weight: 0.4-0.5 ounce (12-14 g)
Wingspan: 7.9-8.7 inches (20-22 cm)
Painted Redstarts breed in the southwestern United States and parts of Mexico. During migration, they can occasionally be observed in the southern and central U.S. states. They spend the winter in Mexico and Central America.
These warblers inhabit mountainous regions with pine and oak forests during migration. They actively forage for insects, often using a distinctive tail-flicking behavior.
Here’s a sample of the Painted Redstart’s song: [Credit: Andrew Spencer, XC366129]
30. MacGillivray’s Warbler
MacGillivray’s Warblers are rare visitors to Delaware during migration, with occasional sightings.
MacGillivray’s Warblers have a subtle appearance, featuring olive-green upperparts and a yellow underbelly. They possess a distinctive gray hood and a white eye-ring.
Scientific Name: Geothlypis tolmiei
Length: 4.7-5.1 inches (12-13 cm)
Weight: 0.3-0.4 ounce (9-11 g)
Wingspan: 7.5-8.3 inches (19-21 cm)
MacGillivray’s Warblers breed in the northwestern United States and parts of Canada. During migration, they can occasionally be observed in the western and central U.S. states. They spend the winter in Mexico and Central America.
These warblers favor shrubby habitats, including thickets, forest edges, and riparian areas, during migration. They actively forage for insects and spiders in the lower vegetation.
Here’s a sample of the MacGillivray’s Warbler’s song: [Credit: Mike Nelson, XC134475]
31. Townsend’s Warbler
Townsend’s Warblers are rare visitors to Delaware during migration, with occasional sightings.
Townsend’s Warblers have a distinct appearance, featuring black upperparts with bright yellow patches on the face and underparts. They possess white wing patches.
Scientific Name: Setophaga townsendi
Length: 4.7-5.1 inches (12-13 cm)
Weight: 0.3-0.4 ounce (9-11 g)
Wingspan: 7.5-8.3 inches (19-21 cm)
Townsend’s Warblers breed in the northwestern United States and parts of Canada. During migration, they can occasionally be observed in the western and central U.S. states. They spend the winter in Mexico and Central America.
These warblers inhabit a variety of coniferous habitats, including forests and woodlands, during migration. They actively forage for insects and spiders in the upper vegetation.
Here’s a sample of the Townsend’s Warbler’s song: [Credit: Mike Nelson, XC377526]
32. Hermit Warbler
Hermit Warblers are rare visitors to Delaware during migration, with occasional sightings.
Hermit Warblers have a distinct appearance, featuring black upperparts with bright yellow patches on the face, wings, and underparts. They possess a white wing patch.
Scientific Name: Setophaga occidentalis
Length: 4.7-5.1 inches (12-13 cm)
Weight: 0.3-0.4 ounce (9-11 g)
Wingspan: 7.5-8.3 inches (19-21 cm)
Hermit Warblers breed in the western United States and parts of Canada. During migration, they can occasionally be observed in the western U.S. states. They spend the winter in Mexico and Central America.
These warblers inhabit a variety of coniferous habitats, including forests and woodlands, during migration. They actively forage for insects and spiders in the upper vegetation.
Here’s a sample of the Hermit Warbler’s song: [Credit: Andrew Spencer, XC366131]
33. Lucy’s Warbler
Lucy’s Warblers are rare visitors to Delaware during migration, with occasional sightings.
Lucy’s Warblers have a subtle appearance, featuring plain grayish-brown upperparts and a pale yellow wash on the underparts. They possess a pale eyering.
Scientific Name: Oreothlypis luciae
Length: 4.7-5.1 inches (12-13 cm)
Weight: 0.3-0.4 ounce (9-11 g)
Wingspan: 7.5-8.3 inches (19-21 cm)
Lucy’s Warblers breed in the southwestern United States and parts of Mexico. During migration, they can occasionally be observed in the southern and central U.S. states. They spend the winter in Mexico.
These warblers favor arid habitats, including desert scrub and mesquite woodlands, during migration. They actively forage for insects and spiders in the lower vegetation.
Here’s a sample of the Lucy’s Warbler’s song: [Credit: Andrew Spencer, XC366140]
34. Virginia’s Warbler
Virginia’s Warblers are rare visitors to Delaware during migration, with occasional sightings.
Virginia’s Warblers have a subtle appearance, featuring grayish-olive upperparts and a pale yellow wash on the underparts. They possess a gray head and a distinct white eye-ring.
Scientific Name: Oreothlypis virginiae
Length: 4.7-5.1 inches (12-13 cm)
Weight: 0.3-0.4 ounce (9-11 g)
Wingspan: 7.5-8.3 inches (19-21 cm)
Virginia’s Warblers breed in the southwestern United States and parts of Mexico. During migration, they can occasionally be observed in the southern and central U.S. states. They spend the winter in Mexico and Central America.
These warblers favor a variety of habitats, including woodlands, brushy areas, and riparian zones, during migration. They actively forage for insects and spiders in the lower vegetation.
Here’s a sample of the Virginia’s Warbler’s song: [Credit: Andrew Spencer, XC366147]
35. Colima Warbler
Colima Warblers are rare visitors to Delaware during migration, with occasional sightings.
Colima Warblers have a subtle appearance, featuring olive-green upperparts and a pale yellow wash on the underparts. They possess a gray head and a distinct white eye-ring.
Scientific Name: Oreothlypis crissalis
Length: 4.7-5.1 inches (12-13 cm)
Weight: 0.3-0.4 ounce (9-11 g)
Wingspan: 7.5-8.3 inches (19-21 cm)
Colima Warblers breed in the southwestern United States and parts of Mexico. During migration, they can occasionally be observed in the southern and central U.S. states. They spend the winter in Mexico.
These warblers favor a variety of habitats, including oak and pine woodlands, during migration. They actively forage for insects and spiders in the lower vegetation.
Here’s a sample of the Colima Warbler’s song: [Credit: Andrew Spencer, XC366158]
Please note that the presence and frequency of these warbler species in Delaware during migration can vary from year to year. The information provided here is based on general patterns and sightings but may not reflect current or future occurrences.
How Frequently Warblers Are Spotted In Delaware In Summer And Winter
The frequency of warbler sightings during summer and winter in Delaware can be explored through the utilization of checklists. These comprehensive records depict the most commonly observed warblers on ebird checklists within the state.
Warblers encountered in Delaware during summer:
– The Common Yellowthroat accounts for 38.8% of the recorded sightings.
– The Yellow Warbler follows with a proportion of 16.9%.
– The Ovenbird is observed at a rate of 14.5%.
– The American Redstart holds a share of 9.8%.
– The Northern Parula is noted at 9.1%.
– The Black-and-white Warbler appears in 7.9% of the cases.
– The Yellow-breasted Chat and Yellow-rumped Warbler both have a presence of 7.2%.
– The Pine Warbler is reported in 7.2% of the observations.
– The Blackpoll Warbler is sighted at a rate of 5.7%.
– The Prairie Warbler is present in 5.6% of the instances.
– The Black-throated Blue Warbler is recorded at 4.7%.
– The Magnolia Warbler accounts for 3.4% of the sightings.
– The Louisiana Waterthrush appears in 2.8% of the checklists.
– The Black-throated Green Warbler is observed at a rate of 2.7%.
– The Northern Waterthrush is noted in 2.3% of the cases.
– The Chestnut-sided Warbler holds a proportion of 2.0%.
– The Yellow-throated Warbler is sighted at 1.9%.
– The Worm-eating Warbler is reported in 1.8% of the observations.
– The Blue-winged Warbler is present in 1.4% of the instances.
– The Canada Warbler and Kentucky Warbler both have a presence of 1.3%.
– The Blackburnian Warbler is recorded at 0.9%.
– The Bay-breasted Warbler is noted at 0.7%.
– The Palm Warbler, Wilson’s Warbler, and Hooded Warbler share a presence of 0.6%.
– The Cape May Warbler appears in 0.5% of the checklists.
– The Nashville Warbler is observed at a rate of 0.4%.
– The Tennessee Warbler accounts for 0.3% of the sightings.
– The Cerulean Warbler is recorded in 0.2% of the cases.
– The Mourning Warbler appears at a rate of 0.1%.
– The Golden-winged Warbler and Orange-crowned Warbler are both observed in less than 0.1% of the instances.
– The Connecticut Warbler is the least frequently spotted warbler in Delaware, also appearing in less than 0.1% of the checklists.
Warblers encountered in Delaware during winter:
– The Yellow-rumped Warbler is observed at a rate of 11.7%.
– The Pine Warbler follows with a proportion of 0.8%.
– The Orange-crowned Warbler is sighted at 0.4%.
– The Palm Warbler appears in 0.3% of the cases.
– The Common Yellowthroat is noted at 0.2%.
– The Nashville Warbler, Yellow-breasted Chat, and Prairie Warbler all have a presence of less than 0.1%.
– The Northern Waterthrush, Yellow-throated Warbler, Yellow Warbler, and Black-and-white Warbler are each observed in less than 0.1% of the instances.
– The Wilson’s Warbler and Cape May Warbler are both recorded at less than 0.1%.
Methods to attract warblers to your backyard
Warblers are not as commonly drawn to backyard feeders as other songbirds. However, there are strategies to entice these melodious avian creatures to your yard:
1. If your yard is sufficiently spacious, provide trees.
2. Maintain brush piles and avoid excessive tidiness to create a habitat for insects, which warblers feed on.
3. Refrain from using pesticides or herbicides to ensure an abundant insect population and prevent birds from consuming harmful substances.
4. Establish a clean water source.
5. Offer mealworms, preferably live ones, but dried ones can be an alternative.
6. Place bird feeders containing sunflower seeds, peanut hearts, and suet.
A guide to warbler songs
Warblers often make their presence known through their songs before they are seen. Familiarizing yourself with some of these songs can facilitate the identification of the bird you encounter. Fortunately, certain warbler songs possess distinctive qualities.
Warbler songs can be described as buzzy, clear, or trilling, exhibiting variations in pitch and encompassing multiple distinct sounds. Buzzy notes resemble the sounds of insects, clear notes resemble whistles, and trills are rapid and indistinguishable as individual notes.
While all the warblers in this guide have audible songs, you can consult a separate guide focusing on 13 easily recognizable warbler songs to aid in identification.
Warblers with buzzy songs:
– The Black-throated Blue Warbler’s song ascends and possesses a buzzy quality.
– The Prairie Warbler’s songs are also buzzy and ascend.
– The Black-throated Green Warbler’s songs feature buzzy elements, interspersed with a few clear notes.
– The Blackpoll Warbler produces clear and steady songs that resemble the buzzing of insects.
– The Prairie Warbler’s song is buzzy and rises in pitch.
– The Palm Warbler’s song has a buzzy quality.
Warblers with songs containing clear notes:
– The Common Yellowthroat’s song comprises a series of rising and falling notes that repeat.
– The Ovenbird produces a series of rising and falling notes.
– The Hooded Warbler also emits clear notes.
– The Chestnut-sided Warbler’s song consists of a series of clear, descending notes that accelerate toward the end.
– The Yellow-rumped Warbler’s song comprises a series of clear notes that fade away.
– The Yellow Warbler’s song accelerates.
– The Northern Parula delivers a rising trill that concludes with a different note, similar to a final punctuation mark.
– The Wilson’s Warbler’s song consists of a series of clear, descending notes that speed up.