In Ontario, this comprehensive manual will assist you in identifying the various species of warblers that are commonly found, providing photo identification, detailed descriptions, captivating audio recordings of their melodic songs, intriguing facts, and more.
Warblers, those petite migratory songbirds, embark on lengthy journeys from South America, spanning vast distances to reach their breeding grounds as far as Canada. These vibrant creatures, adorned in shades of yellow and green, hasten from their breeding to wintering grounds, serenading the air with a splendid medley of songs.
The North American warblers, commonly referred to as wood-warblers, primarily inhabit woodlands and forests. A word of caution: avidly gazing into the treetops through your binoculars, attempting to spot these elusive birds, may result in warbler neck—a discomforting stiffness and tingling sensation in the neck.
While warblers predominantly feed on insects, they occasionally visit backyard feeders in search of seeds or mealworms. Discover the assortment of bird species that frequently grace Ontario, and don’t forget to obtain a complimentary identification chart.
This manual is a valuable resource for identifying regularly occurring warbler species in Ontario. It relies on data compiled from dedicated birdwatchers on eBird, as well as information from avibase, to provide accurate details regarding the ideal timing for spotting these captivating birds.
For each warbler species featured in this guide, you can indulge in their melodious songs and access a comprehensive guide showcasing their distinct song variations. Additionally, peruse the accompanying guide, which offers an easy-to-follow compilation of 13 recognizable warbler songs.
Ontario is home to an impressive array of 16 warbler species:
1. Yellow Warbler
During the breeding season, Yellow Warblers frequently grace Ontario. They make appearances from April through September, with a few lingering until December. Bird watchers report spotting them in 32% of their summer checklists.
Yellow Warblers are small, vibrant yellow birds with a yellow-green back. Males boast chestnut streaks on their breasts, while females and juveniles exhibit less brightness and lack these distinctive streaks.
- Setophaga petechia
- Length: 4.7-5.1 in (12-13 cm)
- Weight: 0.3-0.4 oz (9-11 g)
- Wingspan: 6.3-7.9 in (16-20 cm)
These resilient birds embark on a lengthy migration to breed in Canada and the United States, excluding southeastern states, before embarking on their winter sojourn to Central and South America. However, during migration, they can be glimpsed in southeastern US states.
Yellow Warblers are often found along streams, wetlands, and the edges of fields, where they forage for insects such as caterpillars, midges, beetles, bugs, and wasps.
Listen to the Yellow Warbler’s captivating song:
Credit: Richard E. Webster, XC662546. Accessible at www.xeno-canto.org/662546.
Nests woven by Yellow Warblers rest atop small trees or shrubs, crafted from bark, grass, and plant materials intricately intertwined and secured with spider webs. The cup-shaped nest is lined with softer materials like hair, feathers, and plant down.
A female Yellow Warbler lays up to seven eggs, which hatch after approximately twelve days. The young remain in the nest for an additional ten days before venturing into the world.
To attract Yellow Warblers to your backyard, provide suet, oranges, peanut butter, and berry-bearing plants. Cultivate native plants that beckon insects without the use of pesticides, while maintaining a natural and welcoming habitat with birdbaths and fountains nestled amidst secluded foliage.
Interesting Fact: Cowbirds have a tendency to lay their eggs in Yellow Warbler nests. When detected, Yellow Warblers build new nests atop the old ones, repeating the process up to six times!
2. Yellow-rumped Warbler
Yellow-rumped Warblers, sighted in Ontario during the breeding season, experience an increase in numbers during migration, occurring from April to May and September to October. These charming birds grace 16% of summer checklists and up to 32% of checklists during migration.
With their gray plumage, Yellow-rumped Warblers sport flashes of yellow on their face, sides, and rump, while their wings shimmer with white hues. Females may display a touch of brown, while winter birds exhibit paler brown shades with vibrant yellow rumps and sides that transition back to yellow and gray come spring.
Two subspecies exist: the Myrtle Warbler, found in the eastern United States and Canadian boreal forests, lacking a yellow throat, and the Audubon’s Warbler, native to the western regions, distinguished by additional white markings on its wings.
- Setophaga coronata
- Length: 4.7-5.5 in (12-14 cm)
- Weight: 0.4-0.5 oz (12-13 g)
- Wingspan: 7.5-9.1 in (19-23 cm)
Yellow-rumped Warblers primarily breed in Canada, the Rockies, and the Appalachian Mountains. During migration, they grace the Midwest before seeking refuge for winter in southern and southwestern US states, the Pacific Coast, Mexico, and Central America.
These delightful birds can be found in coniferous forests, particularly during the breeding season, while they seek out open areas with fruiting shrubs in winter. Their diet primarily consists of insects during summer and migration, shifting to a fruit-based fare during winter, including bayberries and wax myrtles.
Listen to the Yellow-rumped Warbler’s delightful song:
Credit: Christopher McPherson, XC602699. Accessible at www.xeno-canto.org/602699.
Nests crafted by Yellow-rumped Warblers are fashioned by females using twigs, pine needles, and grass. These nests rest within conifer trees and are lined with soft grass, moss, and hair. Approximately six eggs are laid, requiring two weeks to hatch, with the young departing the nest within two additional weeks.
To attract Yellow-rumped Warblers to your backyard, offer sunflower seeds, suet, raisins, and peanut butter.
Interesting Fact: During winter, Yellow-rumped Warblers form flocks numbering in the thousands, and they exhibit a certain degree of aggression towards other species that venture too close.
3. Common Yellowthroat
Common Yellowthroats reside in Ontario during the breeding season, appearing on 23% of summer checklists. These captivating birds are commonly sighted from May to October.
Characterized by their small stature, Common Yellowthroats exhibit brownish plumage on their backs and vibrant yellow shades on their underbellies, accompanied by elongated tails. The males boast distinctive black masks adorning their faces, while the brightness of the yellow hue may vary geographically, occasionally manifesting as olive tones.
- Geothlypis trichas
- Length: 4.3-5.1 in (11-13 cm)
- Weight: 0.3-0.3 oz (9-10 g)
- Wingspan: 5.9-7.5 in (15-19 cm)
During the summer, Common Yellowthroats breed across most of North America, with the exception of Alaska and northern Canada. Some individuals remain along the Gulf Coast and Pacific Southwest throughout the year, while others embark on migratory journeys southward for winter.
You can find Common Yellowthroats thriving in marshy or wetland areas and brushy fields, taking solace amidst thick, entangled vegetation.
Listen to the captivating song of the Common Yellowthroat:
Credit: Paul Marvin, XC629250. Accessible at www.xeno-canto.org/629250.
The nests of Common Yellowthroats are carefully constructed by females near the ground in marshy regions, supported by sturdy reeds. These nests are composed of grass, sedges, and a platform of leaves and grass, intricately woven together. Lining the nest with animal hair, the female lays up to six eggs, which hatch within approximately twelve days, followed by the young leaving the nest over the course of a similar timeframe.
To attract Common Yellowthroats to spacious backyards, foster dense vegetation and cultivate native plants that entice insects.
Interesting Fact: The black masks adorning the faces of Common Yellowthroat males serve as signals to courting males, triggering attacks when decoy birds lacking masks are introduced.
4. American Redstart
During the summer, American Redstarts can be found in Ontario, appearing in 16% of summer checklists. They arrive in April and commence their migratory journey in October.
Adorned mostly in black plumage, American Redstarts showcase vibrant orange patches and a white belly. Females, on the other hand, display an olive-gray coloration instead of black, with yellow patches.
- Setophaga ruticilla
- Length: 4.3-5.1 in (11-13 cm)
- Weight: 0.2-0.3 oz (6-9 g)
- Wingspan: 6.3-7.5 in (16-19 cm)
American Redstarts breed in the eastern United States, Canada, and even venture into the northwestern states. During migration, they can be observed in central and western US states.
These lively birds can be found in deciduous woodlands, where they actively hunt for insects. They also frequent backyards and thickets, savoring berries such as serviceberry and magnolia.
Listen to the captivating song of the American Redstart:
Credit: Nick Kiehl, XC522368. Accessible at www.xeno-canto.org/522368.
Nests crafted by American Redstarts are located near the trunk of trees or large shrubs, comprising bark, grass, and other plant materials. The female lays up to five eggs, which hatch within two weeks, and the young take another week or two to leave the nest.
To attract American Redstarts to your backyard, provide berry plants like magnolia and serviceberry.
Interesting Fact: American Redstart parents exhibit selectivity when feeding their chicks, ensuring that each one receives adequate nourishment.
5. Ovenbird
Ovenbirds grace Ontario during the summer months and can be spotted on 14% of checklists during this period. They arrive in April and commence their migratory journey in October.
Compared to other warblers, Ovenbirds may appear drab, with their olive-green backs and black-and-white spotted undersides.
- Seiurus aurocapilla
- Length: 4.3-5.5 in (11-14 cm)
- Weight: 0.6-1.0 oz (16-28 g)
- Wingspan: 7.5-10.2 in (19-26 cm)
Ovenbirds breed in northeastern US states, Canada, the Midwest, and even extend into northwest Canada. During migration, they can be observed in eastern US states. Come winter, these birds find refuge in Florida, Mexico, Central America, northern South America, and the Caribbean.
You’ll find Ovenbirds foraging on the ground, meticulously sifting through leaf litter in forests, in search of insects.
Listen to the enchanting song of the Ovenbird:
Credit: Christopher McPherson, XC602036. Accessible at www.xeno-canto.org/602036.
Ovenbirds construct their nests primarily on the ground. The female meticulously weaves leaves, grass, bark, and other plant materials to form a domed structure. Animal hair serves as the lining. The female lays around five eggs, which hatch after two weeks, and the young take up to ten days to fledge from the nest.
Interesting Fact: Ovenbirds derive their name from the unique shape of their nests, resembling a Dutch oven.
6. Black-and-white Warbler
While breeding season brings Black-and-white Warblers to Ontario, their numbers surge during migration. They appear on 12% of summer checklists and up to 21% of checklists during migration.
Distinguished by their striped appearance, Black-and-white Warblers are easily recognizable. Males boast a prominent black patch across the eye and cheek, and their black coloration is deeper compared to females.
- Mniotilta varia
- Length: 4.3-5.1 in (11-13 cm)
- Weight: 0.3-0.5 oz (8-15 g)
- Wingspan: 7.1-8.7 in (18-22 cm)
Black-and-white Warblers breed in the eastern United States and Canada. During migration, they traverse central US states. Winter finds them in Florida, along the Gulf Coast, Mexico, Baja California, the Caribbean, and northern South America.
These captivating warblers can be spotted as they hop up and down tree trunks and branches in forests, diligently searching for insects.
Listen to the melodious song of the Black-and-white Warbler:
Credit: Christopher McPherson, XC600300. Accessible at www.xeno-canto.org/600300.
Nests of Black-and-white Warblers are cleverly concealed close to or on the ground, often beneath logs or shrubs. Constructed with bark, grass, and pine needles intricately woven into a cup shape, these nests provide a safe haven. The female lays approximately five eggs, which hatch after around eleven days, and the young take roughly ten days to fledge.
Interesting Fact: Black-and-white Warblers exhibit remarkable fidelity to their wintering and breeding territories, often returning to the same locations year after year.
7. Nashville Warbler
Nashville Warblers make appearances during the breeding season in Ontario, mainly from April to October, with some individuals lingering until January. They are noted on 11% of summer checklists.
With their predominantly yellow plumage, Nashville Warblers possess a green back and gray head, accentuated by a white eye-ring. Females and juveniles are not as vividly colored as males. Notably, they display white bellies nestled between yellow breasts and under their tails.
- Leiothlypis ruficapilla
- Length: 4.3-5.1 in (11-13 cm)
- Weight: 0.2-0.5 oz (6.7-13.9 g)
- Wingspan: 6.7-7.9 in (17-20 cm)
Nashville Warblers breed in northeastern US states, southeastern Canada, and a smaller population can be found in northwestern US states, extending into British Columbia. They can also be observed during migration across most states.
These warblers favor scrubby habitats and low deciduous forests, diligently foraging for insects.
Listen to the delightful song of the Nashville Warbler:
Credit: Peter Ward and Ken Hall, XC512262. Accessible at www.xeno-canto.org/512262.
Nests crafted by Nashville Warblers are situated near the ground and made from bark, moss, and grass, intricately woven into a cup-like structure. Pine needles, soft grass, and animal hair provide the cozy lining. The female lays approximately five eggs, requiring twelve days to hatch, and an additional ten days for the young to fledge.
To attract Nashville Warblers to your backyard during winter, provide suet in southern US states.
Interesting Fact: During their initial migration, Nashville Warblers follow the Atlantic Coast, but subsequently, they opt for an inland route.
8. Chestnut-sided Warbler
From May to mid-November, Chestnut-sided Warblers can be found in Ontario during the summer. They appear on 12% of summer checklists.
Male Chestnut-sided Warblers showcase bright yellow crowns and black masks, with a gray underbelly adorned by chestnut hues along the sides. In winter, the males molt into green and white plumage, resembling breeding females.
Females exhibit a paler appearance without the black facial markings. They retain the chestnut sides and yellow crown during the breeding season, but lose the chestnut coloring in winter, while the crown becomes even more vibrant. Juveniles resemble winter females.
- Setophaga pensylvanica
- Length: 4.7-5.5 in (12-14 cm)
- Weight: 0.4-0.5 oz (10.7-14.3 g)
- Wingspan: 7.5-8.3 in (19-21 cm)
Chestnut-sided Warblers breed in northeastern US states, southeastern Canada, and can also be observed during migration across eastern US states.
These delightful birds can be found on forest edges, thickets, and areas where forests have undergone natural disturbances such as fires, logging, or floods. They particularly relish the regeneration phase of these forests.
Listen to the enchanting song of the Chestnut-sided Warbler:
Credit: Christopher McPherson, XC600739. Accessible at www.xeno-canto.org/600739.
Nests crafted by Chestnut-sided Warblers rest on low branches of trees and shrubs. Constructed from grass, weeds, bark, and woven intricately together, the nests are lined with softer materials. The female lays up to five eggs, which hatch within twelve days, and the young require around eleven days to fledge.
Interesting Fact: Chestnut-sided Warblers display a preference for breeding in regenerating forests, seeking out habitats that have experienced disturbances. Once these forests reach a mature stage, usually after a decade or so, the warblers seek new locations to breed.
9. Black-throated Green Warbler
Black-throated Green Warblers spend their summers in Ontario, primarily sighted from May to October in the southern part of the province. They appear on 10% of summer checklists.
These charming warblers sport predominantly yellow plumage, with a yellow face, head, and olive-yellow back. They exhibit black streaking on their sides and wings and a whitish underbelly. Males feature prominent black patches on their throats, while females and juveniles possess smaller patches.
- Setophaga virens
- Length: 4.3-4.7 in (11-12 cm)
- Weight: 0.3-0.4 oz (7-11 g)
- Wingspan: 6.7-7.9 in (17-20 cm)
Black-throated Green Warblers undertake a lengthy migratory journey across the eastern United States, reaching their breeding grounds in northeastern US states and Canada. During migration, they can be observed in the eastern US. In winter, these birds seek respite in Central America, Mexico, northern South America, and the Caribbean.
You can spot Black-throated Green Warblers high up in forests, where they diligently hunt for insects. Their black throat serves as a distinguishing feature, setting them apart from other small yellow birds.
Listen to the captivating song of the Black-throated Green Warbler:
Credit: Paul Driver, XC187636. Accessible at www.xeno-canto.org/187636.
Nests of Black-throated Green Warblers are constructed in small trees, situated near the trunk. The nests are composed of twigs, bark, and woven with spider webs, with a lining of animal hair, moss, and feathers. The female lays around four eggs, which hatch after approximately twelve days, and the young take about ten days to fledge.
To attract Black-throated Green Warblers to your backyard, provide mature trees that offer suitable resting spots.
Interesting Fact: Male Black-throated Green Warblers can sing over 400 times in an hour and perform a unique “gloating” flight after successfully chasing off rivals.
10. Magnolia Warbler
Magnolia Warblers can be spotted in Ontario from mid-April until November and are noted on 8% of summer checklists.
These warblers don striking appearances, with males displaying a black back and yellow underbelly. Black streaking forms a “necklace” around their necks and continues down their bellies. In contrast, females exhibit a grayer back and lack the distinct streaking on the belly.
- Setophaga magnolia
- Length: 4.3-5.1 in (11-13 cm)
- Weight: 0.2-0.5 oz (6-15 g)
- Wingspan: 6.3-7.9 in (16-20 cm)
Magnolia Warblers breed across Canada, northeastern US states, and can be observed during migration across the eastern US. They spend their winters in Central America and the Caribbean.
These exquisite warblers prefer low branches in forests or parks, making it relatively easier to spot them during migration. They have a diet primarily consisting of insects and spiders.
Listen to the delightful song of the Magnolia Warbler:
Credit: Peter Ward and Ken Hall, XC512264. Accessible at www.xeno-canto.org/512264.
Nests of Magnolia Warblers are loosely constructed from grass and weeds, placed close to the trunk of conifer trees. They lay around four eggs, which hatch after about twelve days, and the young take approximately nine days to fledge.
To attract Magnolia Warblers to your backyard during migration, cultivate native shrubs and trees that offer them resting spots.
Interesting Fact: Magnolia Warblers display their white tail spots as a means of attracting females and warding off rivals.
11. Blackburnian Warbler
Blackburnian Warblers grace Ontario during the summer, primarily sighted from May to September. They appear on 7% of summer checklists.
These striking warblers showcase vibrant orange throats, contrasting against their black backs and white underparts. Males display more extensive orange markings, while females possess duller coloration.
- Setophaga fusca
- Length: 4.3-5.1 in (11-13 cm)
- Weight: 0.3-0.4 oz (8-12 g)
- Wingspan: 7.1-8.3 in (18-21 cm)
Blackburnian Warblers breed in northeastern US states, Canada, and parts of the Appalachian Mountains. They undertake a remarkable migration, traveling to South America for the winter.
You can find Blackburnian Warblers high up in coniferous and mixed forests, foraging for insects among the branches.
Listen to the melodious song of the Blackburnian Warbler:
Credit: Tom Johnson, XC562735. Accessible at www.xeno-canto.org/562735.
Nests of Blackburnian Warblers are typically constructed on conifer branches, utilizing materials such as twigs, moss, bark, and lichens, intricately woven together. The female lays approximately four eggs, which hatch within two weeks, and the young take about ten days to fledge.
Interesting Fact: The vibrant orange throat of male Blackburnian Warblers is a result of a pigment called rhodoxanthin, which is not commonly found in other bird species.
12. Palm Warbler
Palm Warblers visit Ontario during migration, primarily from April to May and September to October. They are noted on 9% of checklists during migration.
These energetic warblers exhibit two distinct plumage variations known as “Western” and “Yellow.” The Western Palm Warblers display brownish backs and yellow underparts with streaking, while the Yellow Palm Warblers have brighter yellow underparts and lack streaking.
- Setophaga palmarum
- Length: 4.7-5.1 in (12-13 cm)
- Weight: 0.3-0.4 oz (9-11 g)
- Wingspan: 7.9-8.7 in (20-22 cm)
Palm Warblers breed in the northern boreal forests of Canada and Alaska. During migration, they can be observed across the eastern and central United States. Their winter grounds stretch from the southeastern United States to the Caribbean and Central America.
These lively warblers prefer open areas such as fields, marshes, and forest edges, where they actively forage for insects.
Listen to the cheerful song of the Palm Warbler:
Credit: Jonathon Jongsma, XC506736. Accessible at www.xeno-canto.org/506736.
Nests of Palm Warblers are constructed on the ground, typically hidden beneath shrubs or grass clumps. Composed of grasses, moss, and plant fibers, the nest provides a safe haven for the female to lay approximately four to five eggs. The eggs hatch after around two weeks, and the young fledge in approximately ten days.
Interesting Fact: Palm Warblers often wag their tails up and down while foraging on the ground, a behavior that distinguishes them from other warbler species.
13. Canada Warbler
Canada Warblers spend their summers in Ontario, appearing from late May to August. They are recorded on 6% of summer checklists.
These elegant warblers display a unique appearance with slate-blue upperparts, yellow underparts, and a distinct necklace of black streaks across their throats and upper chests.
- Cardellina canadensis
- Length: 4.7-5.1 in (12-13 cm)
- Weight: 0.3-0.4 oz (9-11 g)
- Wingspan: 7.5-8.3 in (19-21 cm)
Canada Warblers breed primarily in the boreal forests of Canada and northeastern US states. They embark on a remarkable migration, traveling to South America for the winter.
You can find Canada Warblers in dense understory vegetation, often near streams and wetlands, where they actively hunt for insects.
Listen to the delightful song of the Canada Warbler:
Credit: Jonathon Jongsma, XC174294. Accessible at www.xeno-canto.org/174294.
Nests of Canada Warblers are built on or close to the ground, typically concealed beneath shrubs or moss. Constructed with grasses, leaves, and moss, the nests are intricately woven and lined with finer materials such as feathers and hair. The female lays approximately four eggs, which hatch after around two weeks, and the young take approximately ten days to fledge.
Interesting Fact: Canada Warblers have one of the longest migrations among warbler species, traveling over 12,000 kilometers (7,500 miles) from their breeding grounds to their wintering grounds in South America.
14. Bay-breasted Warbler
Bay-breasted Warblers grace Ontario during migration, primarily from late May to early June and August to September. They are noted on 7% of checklists during migration.
These attractive warblers exhibit distinct plumage. Males display striking rusty-brown heads, black faces, and chestnut-colored flanks, while females possess more subtle coloring with olive-yellow upperparts and lighter underparts.
- Setophaga castanea
- Length: 4.7-5.1 in (12-13 cm)
- Weight: 0.3-0.4 oz (9-11 g)
- Wingspan: 7.1-7.9 in (18-20 cm)
Bay-breasted Warblers breed in the boreal forests of Canada and Alaska. During migration, they can be observed across the eastern United States. Their winter grounds extend to northern South America.
These active warblers prefer mixed forests and woodlands, where they forage for insects among the tree canopies.
Listen to the melodious song of the Bay-breasted Warbler:
Credit: Andrew Spencer, XC543441. Accessible at www.xeno-canto.org/543441.
Nests of Bay-breasted Warblers are constructed in trees, typically near the trunk and hidden by foliage. Composed of twigs, grass, and moss, the nests are lined with finer materials such as hair and feathers. The female lays approximately four to five eggs, which hatch after around two weeks, and the young fledge in approximately ten days.
Interesting Fact: Male Bay-breasted Warblers acquire their rusty-brown head plumage through the oxidation of pigment during the breeding season. This transformation provides a visual signal to attract mates.
15. Wilson’s Warbler
Wilson’s Warblers pass through Ontario during migration, primarily from late May to early June and August to September. They are recorded on 8% of checklists during migration.
These small, lively warblers exhibit bright yellow plumage, olive-green backs, and distinctive black caps on their heads. Females and juveniles possess duller coloration and lack the black cap.
- Cardellina pusilla
- Length: 4.3-4.7 in (11-12 cm)
- Weight: 0.3-0.4 oz (9-11 g)
- Wingspan: 6.7-7.9 in (17-20 cm)
Wilson’s Warblers breed in western North America, including parts of Canada and the western United States. They migrate to Mexico and Central America for the winter.
You can find Wilson’s Warblers in a variety of habitats, including forests, thickets, and shrubby areas, where they actively search for insects.
Listen to the cheerful song of the Wilson’s Warbler:
Credit: Andrew Spencer, XC536310. Accessible at www.xeno-canto.org/536310.
Nests of Wilson’s Warblers are typically built on or close to the ground, concealed in shrubs or grass clumps. Constructed from grasses, moss, and plant fibers, the nests are lined with softer materials such as feathers and hair. The female lays around four eggs, which hatch after approximately two weeks, and the young take around ten days to fledge.
Interesting Fact: Wilson’s Warblers are known for their constant tail-wagging behavior, which adds a touch of liveliness to their already energetic nature.
16. Tennessee Warbler
Tennessee Warblers pass through Ontario during migration, primarily from late May to early June and August to September. They are noted on 8% of checklists during migration.
These modestly colored warblers exhibit olive-green upperparts, pale underparts, and a faint gray head. They lack the distinct markings and bright colors found in many other warbler species.
- Leiothlypis peregrina
- Length: 4.3-4.7 in (11-12 cm)
- Weight: 0.3-0.4 oz (9-11 g)
- Wingspan: 7.1-7.9 in (18-20 cm)
Tennessee Warblers breed in the boreal forests of Canada and Alaska. They undertake a remarkable migration, traveling through the eastern United States to their wintering grounds in northern South America.
You can find Tennessee Warblers in a variety of habitats, including forests, woodlands, and shrubby areas, where they actively feed on insects.
Listen to the soothing song of the Tennessee Warbler:
Credit: Jonathon Jongsma, XC174287. Accessible at www.xeno-canto.org/174287.
Nests of Tennessee Warblers are typically built in low shrubs or trees, hidden among foliage. Constructed from twigs, grass, and plant fibers, the nests are lined with softer materials such as hair and feathers. The female lays around four to five eggs, which hatch after approximately two weeks, and the young take around ten days to fledge.
Interesting Fact: Tennessee Warblers acquired their name from the location where the species was first observed and described, near Nashville, Tennessee.