Discover the comprehensive handbook designed to assist you in identifying the various warbler species that can be frequently found in New Brunswick. Packed with vivid photo identification, detailed descriptions, captivating audio recordings of their enchanting melodies, and intriguing facts, this guide offers an abundance of valuable information and more.
Warblers, those small migratory songbirds, embark on incredible journeys spanning vast distances, from South America to their breeding grounds in Canada. Radiating vibrant colors and remarkable vocal prowess, these energetic avians traverse from one habitat to another in a dazzling display of yellow and green, serenading the wilderness with an astonishing array of melodies.
Renowned as wood-warblers in North America, these splendid creatures predominantly inhabit woodlands and forests. It is worth noting that avid birdwatchers may even experience a peculiar phenomenon known as “warbler neck” – a delightful combination of neck stiffness and tingling sensations resulting from the ardent pursuit of glimpsing these charming birds high up in the treetops through binocular lenses.
Although warblers primarily subsist on insects, they occasionally pay visits to backyard feeders, enticed by seeds or mealworms. For those seeking further knowledge about the diverse bird species regularly spotted in New Brunswick, this guide also includes a complimentary identification chart.
Within this comprehensive manual, you will uncover the classification of warblers typically sighted in New Brunswick, listed based on their regular occurrence, utilizing data sourced from avid birdwatchers through the ebird platform, supplemented by information derived from the esteemed avibase database, ensuring precise and authentic observations.
For every warbler featured in this guide, you will have the opportunity to listen to their melodious songs and explore a guide detailing the distinctive song variations amongst warbler species. Moreover, you can refer to a supplementary guide showcasing 13 easily recognizable warbler songs, aiding your quest for identification.
Table of Contents:
Warblers in New Brunswick by Season
Warblers in New Brunswick during Summer: Common Yellowthroat, Yellow-rumped Warbler, American Redstart, Yellow Warbler, Northern Parula, Black-throated Green Warbler, Black-and-white Warbler, Magnolia Warbler, Ovenbird, Chestnut-sided Warbler, Nashville Warbler, Palm Warbler, Blackburnian Warbler, Blackpoll Warbler, Black-throated Blue Warbler, Northern Waterthrush, Bay-breasted Warbler, Cape May Warbler, Pine Warbler, Tennessee Warbler, Canada Warbler, Mourning Warbler
Warblers in New Brunswick during Migration: Wilson’s Warbler, Orange-crowned Warbler
A Compilation of 24 Warbler Species in New Brunswick:
1. Common Yellowthroat
The delightful Common Yellowthroats grace the breeding season in New Brunswick, making appearances in approximately 24% of submitted summer checklists. Their vibrant plumage showcases a brownish back contrasting with a radiant yellow underbelly, accompanied by long tails. The males exhibit striking black masks on their faces. Notably, the intensity of their yellow hue may exhibit slight geographical variation, occasionally appearing more olive in certain regions.
- Species 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 inhabit various regions across North America throughout the summer breeding period, excluding Alaska and northern Canada. While many embark on migratory journeys to Central and South America for the winter, some opt to reside year-round along the Gulf Coast and Pacific Southwest.
Typically, these delightful songbirds can be found in marshy areas, wet
lands, and brushy fields, taking shelter amidst thick, entangled vegetation.
Fun Fact: The black mask displayed by Common Yellowthroats serves as a visual cue for courting males, triggering aggressive responses towards perceived rival males. Interestingly, when artificial birds lacking the characteristic mask are introduced, the males do not engage in aggressive behavior.
2. Yellow-rumped Warbler
Yellow-rumped Warblers grace the breeding season in New Brunswick, with an amplified presence during migration in May and from September to October. They feature on approximately 19% of summer checklists and up to 34% of checklists during migration.
These delightful warblers exhibit a gray plumage adorned with vibrant yellow patches on their face, sides, and rump, further accentuated by white wings. While males possess a distinct yellow throat, females may appear slightly brown. Notably, winter birds exhibit paler brown tones, with their bright yellow sides and rump transitioning to a combination of yellow and gray during spring.
- Species 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 predominantly breed in Canada, encompassing regions such as the Rockies, the Appalachian mountains, and parts of the United States. During migration, they grace the Midwest before embarking on their winter sojourn across southern and southwestern states of the U.S., the Pacific Coast, Mexico, and Central America.
Coniferous forests serve as favored habitats for these delightful birds, especially during the breeding season. In winter, they frequent open areas enriched with fruit-bearing shrubs. Their diet predominantly comprises insects during the summer and shifts to fruit consumption during migration and winter, including bayberry and wax myrtle.
Fun Fact: Yellow-rumped Warblers have a propensity for forming flocks numbering in the thousands during the winter months. They can display aggression towards other species encroaching on their territory.
3. American Redstart
During the summer months, New Brunswick becomes a temporary home for American Redstarts, featuring in approximately 22% of checklists between May and November.
These captivating birds captivate onlookers with their predominantly black plumage, accentuated by vibrant orange patches and a white underbelly. While males exhibit black hues, females don olive-gray tones, retaining their yellow patches.
- Species 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, extending into Canada and the northwestern U.S. states. They also make appearances during migration across central and western U.S. states.
These charming warblers can be found in deciduous woodlands, where they actively hunt insects. Additionally, they are known to frequent backyards and thickets, relishing in the consumption of berries such as serviceberry and magnolia.
Fun Fact: Male American Redstarts actively participate in incubating the eggs and feeding the chicks. Their melodious songs fill the air, while they diligently remove fecal sacs from the nest.
4. Yellow Warbler
New Brunswick serves as a frequent stopover for Yellow Warblers during the breeding season. These captivating creatures grace the region from May to October, accounting for approximately 21% of summer checklists.
Yellow Warblers, with their petite, vibrant bodies, exhibit a bright yellow plumage on their underside, complemented by a yellow-green back. The males, in particular, showcase chestnut streaks adorning their breasts. In contrast, females and juveniles lack the same intensity of coloration, appearing less vibrant and devoid of streaks.
- Species 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 embark on extensive migratory journeys to breed in Canada and the United States, excluding the southeastern states. Following the breeding season, they traverse back to Central and South America for winter, making appearances during migration in southeastern U.S. states.
These charming warblers can be spotted along streams, wetlands, thickets, and field edges, diligently foraging for insects like caterpillars, midges, beetles, bugs, and wasps.
Fun Fact: Yellow Warblers construct their nests in small trees or shrubs, utilizing a combination of bark, grass, and plant materials intricately woven together. The nests are supported by spider webs and lined with softer materials such as hair, feathers, and plant down.
5. Northern Parula
During the summer months, Northern Parulas grace the landscapes of New Brunswick, featuring on approximately 20% of summer checklists. Their presence can be observed from May to October.
Northern Parulas exhibit a stunning combination of blueish-gray and yellow feathers. Their backs are adorned in bluish-gray hues, complemented by a distinct yellow patch on their back and two white wingbars. Both males and females possess a chestnut band that separates their yellow throat and chest. Females, however, appear paler than males and lack the chestnut band. Juveniles share a similar paler appearance.
- Species Name: Setophaga americana
- Length: 4.3-4.7 inches (11-12 cm)
- Weight: 0.2-0.4 ounces (5-11 g)
- Wingspan: 6.3-7.1 inches (16-18 cm)
Breeding predominantly in the eastern United States and Canada, Northern Parulas embark on migrations that lead them to Central America, the Caribbean, and occasionally, southern Florida for winter. These charming warblers can often be spotted foraging high up in deciduous forests, feasting on insects.
Fun Fact: Spotting Northern Parula nests can be a thrilling experience. Their nests are intricately constructed using long clumps of lichen and moss that drape from tree branches. Keep an eye out for large clumps of hanging moss during the summer months.
6. Black-throated Green Warbler
Black-throated Green Warblers make New Brunswick their summer sanctuary, with sightings predominantly occurring from May to October. They appear on approximately 15% of checklists during this period.
These small yellow songbirds exhibit a yellow face and head, accompanied by an olive-yellow back. Black streaking on the sides and wings contrasts with their whitish underbellies. Males possess large black patches on their throats, a distinguishing feature absent in females and juveniles.
- Species Name: Setophaga virens
- Length: 4.3-4.7 inches (11-12 cm)
- Weight: 0.3-0.4 ounces (7-11 g)
- Wingspan: 6.7-7.9 inches (17-20 cm)
Black-throated Green Warblers embark on extensive migrations across the eastern United States, reaching their breeding grounds in northeastern U.S. states and Canada. During winter, they find respite in Mexico, northern South America, and the Caribbean.
These delightful warblers can be found high up in forests, fervently feasting on insects. Their black throat serves as a convenient identifier, differentiating them from other small yellow birds.
Fun Fact: Male Black-throated Green Warblers possess incredible vocal prowess, often singing over 400 times in an hour. They also engage in a fascinating aerial display known as “gloating” flight, showcasing their dominance over rivals.
7. Black-and-white Warbler
Black-and-white Warblers frequently grace the landscapes of New Brunswick during the summer, accounting for 16% of checklists. Their presence can be observed from May to November.
With their distinct striped appearance, Black-and-white Warblers are relatively easy to identify. Males boast a prominent black patch across their eye and cheek, displaying darker black hues compared to females.
- Species Name: Mniotilta varia
- Length: 4.3-5.1 inches (11-13 cm)
- Weight: 0.3-0.5 ounces (8-15 g)
- Wingspan: 7.1-8.7 inches (18-22 cm)
Black-and-white Warblers breed in the eastern United States and Canada, making appearances during migration across most states. During
winter, they seek refuge in Florida, along the Gulf Coast, and down through Mexico, Baja California, the Caribbean, and northern South America.
These energetic warblers can often be observed hopping up and down tree trunks and branches within forests, diligently searching for insects.
Fun Fact: Black-and-white Warbler nests are typically hidden close to the ground, often concealed under logs or shrubs. Constructed using bark, grass, and pine needles woven together, the nests provide a safe haven for their eggs, which hatch after approximately eleven days.
8. Magnolia Warbler
Magnolia Warblers make their presence known in New Brunswick from May to October, accounting for 10% of summer checklists.
These beautiful warblers exhibit a rusty red patch atop their heads, complementing their overall browny-olive coloration. Western populations tend to have whiter bellies. Notably, male and female appearances remain similar during the breeding season, with non-breeding birds sporting duller crowns.
- Species Name: Setophaga magnolia
- Length: 4.3-5.1 inches (11-13 cm)
- Weight: 0.2-0.5 ounces (6-15 g)
- Wingspan: 6.3-7.9 inches (16-20 cm)
Magnolia Warblers breed across Canada and northeastern U.S. states, making appearances during migration across the eastern United States. Winter becomes a time of retreat for them, seeking refuge in Central America and the Caribbean.
Spotting Magnolia Warblers becomes a delightful experience when exploring low branches within forests or parks. During migration, they become more accessible, allowing for better observations. Their diet mainly consists of insects and spiders.
Fun Fact: Magnolia Warblers employ a clever strategy to attract mates and ward off rivals. They flaunt the white spots on their tails, acting as both a seductive signal and a warning to potential adversaries.
9. Ovenbird
Ovenbirds frequent New Brunswick mainly from May to September, making appearances on approximately 10% of summer checklists.
Compared to other warblers, Ovenbirds may seem less striking in appearance with their olive-green backs and black-and-white spotted undersides.
- Species 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 and Canada, including the Midwest and northwest regions. During migration, they traverse eastern U.S. states. For the winter season, they seek warmer havens in Florida, Mexico, Central America, northern South America, and the Caribbean.
You can often spot Ovenbirds rummaging through leaf litter on the ground within forests, diligently searching for insects.
Fun Fact: Ovenbirds derive their name from the unique shape of their nests, which resemble Dutch ovens. These nests are crafted from leaves, grass, bark, and other plant materials, intricately woven together to form a cozy cup-shaped abode.
10. Chestnut-sided Warbler
Chestnut-sided Warblers grace New Brunswick with their presence during the summer months, primarily from May to October. They can be found on approximately 9% of checklists during this time.
Male Chestnut-sided Warblers display vibrant yellow crowns, adorned with black masks. Their gray underbellies showcase chestnut streaks along the sides. In winter, males molt into green and white coloring, resembling breeding females.
- Species Name: Setophaga pensylvanica
- Length: 4.7-5.5 inches (12-14 cm)
- Weight: 0.3-0.4 ounces (7-11 g)
- Wingspan: 6.7-7.9 inches (17-20 cm)
Chestnut-sided Warblers breed in northeastern U.S. states and Canada, with their range extending across the eastern United States during migration. In winter, they find respite in Central America, northern South America, and the Caribbean.
These active warblers can be observed foraging within shrubs, thickets, and young forests, feeding on insects, spiders, and berries.
Fun Fact: Chestnut-sided Warblers are known for their distinctive and recognizable song, which is often described as sounding like “pleased, pleased, pleased to meet cha!” These musical warblers are truly a delight to encounter.
11. Nashville Warbler
Nashville Warblers make appearances during the breeding season in New Brunswick, primarily from May to October, accounting for approximately 5% of summer checklists.
These warblers exhibit predominantly yellow plumage with a green back and a gray head adorned with a white eye-ring. While males and females look similar during the breeding season, non-breeding individuals display duller crowns.
- Species Name: 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 and Canada, with some populations extending as far south as Virginia or North Carolina. They can also be spotted during migration across various states.
These warblers can be found in scrubby habitats and low deciduous forests, where they diligently forage for insects.
Fun Fact: After the breeding season, Nashville Warblers actively listen for the songs of successful males, as these indicate areas with high reproductive success. This unique behavior helps them identify suitable habitats for future breeding seasons.
12. Palm Warbler
Palm Warblers grace New Brunswick with their presence from April to October, with a few individuals lingering until December. They are observed on approximately 3% of summer checklists.
Distinguished by a rusty red patch on the crown, Palm Warblers showcase a browny-olive coloration throughout the rest of their bodies. Western populations tend to have whiter bellies. Male and female appearances remain similar during the breeding season, while non-breeding individuals display duller crowns.
- Species Name: Setophaga palmarum
- Length: 4.7-5.5 inches (12-14 cm)
- Weight: 0.3-0.5 ounces (7-13 g)
- Wingspan: 7.9-8.3 inches (20-21 cm)
Palm Warblers predominantly breed in Canada, with sightings during migration across eastern U.S. states. Some individuals spend their winter in Florida and along the southeastern coast.
These warblers can be spotted during the spring and fall migration in weedy fields, forest edges, and scrubby areas. They often forage on the ground, mingling with other bird species such as Sparrows, Juncos, and Yellow-rumped Warblers.
Fun Fact: Unlike many warblers, Palm Warblers display unique ground-foraging behavior, often bobbing their tails while walking and actively searching for insects.
13. Blackburnian Warbler
Blackburnian Warblers enrich New Brunswick’s summer months, appearing on approximately 5% of checklists from May to October.
Male Blackburnian Warblers boast stunning black and orange plumage, with an orange throat and facial markings, black backs and wings, and white bellies adorned with black streaks. Females share a similar black-and-white coloration, with distinct dark triangles by their eyes.
- Species Name: Setophaga fusca
- Length: 4.3-4.7 inches (11-12 cm)
- Weight: 0.3-0.4 ounces (8.9-12.6 g)
- Wingspan: 7.9-9.1 inches (20-23 cm)
Blackburnian Warblers can be seen during migration across eastern U.S. states, while breeding occurs in Canada and northeastern U.S. states, with some individuals breeding as far south as Virginia or North Carolina. They spend their winters in South America.
These warblers can be found in wooded areas and forests, often high up in the tree canopy, as they hunt for caterpillars. Their brilliant coloration makes them a captivating sight, albeit a challenging one to spot among the foliage.
Fun Fact: Male Blackburnian Warblers showcase impressive acrobatic flight displays to defend their territories. They perform looping flights and rapid descents while whirling, raising and spreading their tails as part of their territorial defense strategy.
14. Blackpoll Warbler
Blackpoll Warblers, considered a near-threatened species in New Brunswick, can be spotted during migration, while some individuals also spend the breeding season in the region. They are found on approximately 2% of summer checklists and up to 10% of migration checklists.
Male Blackpoll Warblers exhibit streaked black-and-white plumage, featuring a black cap and white cheeks. Females share a similar black-and-white coloration but lack the black cap and white cheeks. Notably, their appearance changes dramatically in late summer, transitioning to yellow with darker streaking on the back.
- Species Name: Setophaga striata
- Length: 5.5 inches (14 cm)
- Weight: 0.4-0.5 ounces (12-13 g)
- Wingspan: 8.3-9.1 inches (21-23 cm)
Blackpoll Warblers breed in Canada and can be observed during spring migration across eastern United States. During fall, they embark on a long journey to their winter grounds in South America and the Caribbean.
These warblers inhabit forests, where they primarily feed on spiders and insects. However, during the fall, they also incorporate fruit into their diet, such as honeysuckle and pokeberry.
Fun Fact: Blackpoll Warblers undergo a remarkable transoceanic migration. In the fall, they fly non-stop over the Atlantic Ocean from their breeding grounds to South America. During spring migration, they opt for a route over land, stopping in the Caribbean along the way.
15. Black-throated Blue Warbler
Black-throated Blue Warblers spend their summers in New Brunswick and are mainly observed from May to October, accounting for approximately 4% of summer checklists.
Male Black-throated Blue Warblers showcase a beautiful deep blue coloration on their backs and striking white undersides. They stand out among their predominantly yellow warbler counterparts. In contrast, females possess a much plainer grayish-olive appearance.
- Species Name: Setophaga caerulescens
- Length: 4.3-5.1 inches (11-13 cm)
- Weight: 0.3-0.4 ounces (8-12 g)
- Wingspan: 7.5-7.9 inches (19-20 cm)
Black-throated Blue Warblers breed in northeastern U.S. states and Canada, and they can also be observed during migration across eastern U.S. states. During winter, they seek refuge in Central America and the Caribbean.
These warblers primarily inhabit lower areas of deciduous forests, shrubby areas, and occasionally visit backyards while actively foraging for spiders, flies, and caterpillars.
Fun Fact: Male Black-throated Blue Warblers possess a unique auditory behavior. They actively listen for the songs of successful males after the breeding season, allowing them to identify areas with high reproductive success for future breeding seasons.
16. Black-throated Green Warbler
Black-throated Green Warblers are summer residents in New Brunswick, appearing from May to September and accounting for approximately 8% of summer checklists.
Male Black-throated Green Warblers exhibit a striking combination of black throat and green upperparts, while their underparts are yellow. Females possess similar coloration but with duller plumage.
- Species Name: Setophaga virens
- Length: 4.7-5.1 inches (12-13 cm)
- Weight: 0.3-0.4 ounces (8-12 g)
- Wingspan: 7.5-8.3 inches (19-21 cm)
These warblers breed across Canada and the northeastern United States. During migration, they can be observed in various regions of the United States. In winter, they migrate to Central America and the Caribbean.
Black-throated Green Warblers prefer coniferous and mixed forests, where they actively forage for insects on tree branches and foliage.
Fun Fact: Black-throated Green Warblers are known for their distinctive song, a buzzy and rising “zeee zeee zee-o” that is often repeated.
17. Bay-breasted Warbler
Bay-breasted Warblers pass through New Brunswick during their migration, making appearances from late May to early June and accounting for approximately 2% of migration checklists.
Male Bay-breasted Warblers exhibit a unique plumage pattern, featuring a chestnut-colored crown, sides, and throat, with streaked black on the back and a contrasting black face mask. Females possess a more subtle plumage with a yellowish face and lighter streaking on the back.
- Species Name: Setophaga castanea
- Length: 4.7-5.1 inches (12-13 cm)
- Weight: 0.3-0.4 ounces (8-12 g)
- Wingspan: 7.5-8.3 inches (19-21 cm)
These warblers breed in the boreal forests of Canada and Alaska, and during migration, they can be seen across the eastern United States. In winter, they migrate to northern South America.
Bay-breasted Warblers prefer mixed forests and often forage at the tips of branches, seeking out insects and spiders.
Fun Fact: Bay-breasted Warblers are known for their unique feeding behavior called “hover-gleaning.” They hover in mid-air to pluck insects and spiders from leaves and bark.
18. Black-throated Gray Warbler
Black-throated Gray Warblers are rare visitors to New Brunswick during migration, with occasional sightings in late May or early June.
Male Black-throated Gray Warblers display a striking black throat, gray upperparts, and white underparts with black streaking. Females have a more subdued appearance with grayish-olive upperparts and light underparts.
- Species Name: Setophaga nigrescens
- Length: 4.3-5.1 inches (11-13 cm)
- Weight: 0.3-0.4 ounces (8-12 g)
- Wingspan: 7.5-8.7 inches (19-22 cm)
These warblers breed in the western United States and southwestern Canada. During migration, they can be seen across western and central North America. In winter, they migrate to Mexico and Central America.
Black-throated Gray Warblers inhabit open woodlands and forest edges, where they actively forage for insects and spiders.
Fun Fact: Black-throated Gray Warblers are known for their unique tail-wagging behavior, which they use to flush out hidden insects from foliage.
19. Townsend’s Warbler
Townsend’s Warblers are occasional visitors to New Brunswick during migration, with sightings in late May or early June.
Male Townsend’s Warblers display a striking combination of black throat, yellow face, and yellow underparts, with olive-green upperparts. Females have similar coloration but with a duller appearance.
- Species Name: Setophaga townsendi
- Length: 4.7-5.1 inches (12-13 cm)
- Weight: 0.3-0.4 ounces (8-12 g)
- Wingspan: 7.5-8.3 inches (19-21 cm)
These warblers breed in the coniferous forests of western North America, primarily in the United States and western Canada. During migration, they can be seen across western and central North America. In winter, they migrate to Mexico and Central America.
Townsend’s Warblers actively forage for insects and spiders in the treetops of coniferous forests.
Fun Fact: Townsend’s Warblers are known to hybridize with Hermit Warblers, resulting in intermediate plumage patterns that can make identification challenging.
20. Hermit Warbler
Hermit Warblers are rare visitors to New Brunswick during migration, with occasional sightings in late May or early June.
Male Hermit Warblers feature a yellow face, white underparts, and olive-green upperparts. They have a black crown and throat, and the black extends to their back and flanks. Females share similar coloration but with a duller appearance.
- Species Name: Setophaga occidentalis
- Length: 4.7-5.1 inches (12-13 cm)
- Weight: 0.3-0.4 ounces (8-12 g)
- Wingspan: 7.5-8.3 inches (19-21 cm)
These warblers breed in the coniferous forests of western North America, primarily in the United States and southwestern Canada. During migration, they can be seen across western and central North America. In winter, they migrate to Mexico and Central America.
Hermit Warblers actively forage for insects and spiders in the treetops of coniferous forests.
Fun Fact: Hermit Warblers get their name from their preference for dense, remote coniferous forests, where they often remain hidden from view.
21. MacGillivray’s Warbler
MacGillivray’s Warblers are rare visitors to New Brunswick during migration, with occasional sightings in late May or early June.
Male MacGillivray’s Warblers have a distinctive gray hood and olive-green upperparts, with a yellow breast and throat. Females possess similar coloration but with a duller appearance.
- Species Name: Geothlypis tolmiei
- Length: 4.7-5.1 inches (12-13 cm)
- Weight: 0.3-0.4 ounces (8-12 g)
- Wingspan: 7.5-8.3 inches (19-21 cm)
These warblers breed in western North America, primarily in the United States and southwestern Canada. During migration, they can be seen across western and central North America. In winter, they migrate to Mexico and Central America.
MacGillivray’s Warblers inhabit dense shrubby areas and forest edges, where they forage for insects and spiders.
Fun Fact: MacGillivray’s Warblers are named after Scottish naturalist William MacGillivray, who contributed to the field of ornithology in the 19th century.
22. Kentucky Warbler
Kentucky Warblers are rare visitors to New Brunswick during migration, with occasional sightings in late May or early June.
Male Kentucky Warblers display a bright yellow underparts, olive-green upperparts, and a black mask on their
face. Females have a similar coloration but with a duller appearance.
- Species Name: Geothlypis formosa
- Length: 4.7-5.5 inches (12-14 cm)
- Weight: 0.3-0.4 ounces (8-12 g)
- Wingspan: 7.5-8.7 inches (19-22 cm)
These warblers breed in the southeastern United States and parts of the Midwest. During migration, they can be seen across the eastern United States. In winter, they migrate to Mexico and Central America.
Kentucky Warblers prefer dense undergrowth and forest edges, where they forage for insects and spiders.
Fun Fact: Despite their name, Kentucky Warblers do not breed in the state of Kentucky but rather in neighboring states such as Tennessee and Ohio.
23. Worm-eating Warbler
Worm-eating Warblers are rare visitors to New Brunswick during migration, with occasional sightings in late May or early June.
Male Worm-eating Warblers have a plain olive-brown appearance with a buff-colored face and throat. Females share similar coloration but with a duller appearance.
- Species Name: Helmitheros vermivorum
- Length: 4.7-5.1 inches (12-13 cm)
- Weight: 0.3-0.4 ounces (8-12 g)
- Wingspan: 7.5-8.3 inches (19-21 cm)
These warblers breed in the eastern United States, primarily in the southeastern region. During migration, they can be seen across the eastern United States. In winter, they migrate to Mexico and Central America.
Worm-eating Warblers inhabit dense deciduous forests and are known for their ground-foraging behavior, where they search for insects and spiders in leaf litter.
Fun Fact: Despite their name, Worm-eating Warblers primarily feed on insects and spiders, rather than worms.
24. Swainson’s Warbler
Swainson’s Warblers are rare visitors to New Brunswick during migration, with occasional sightings in late May or early June.
Male Swainson’s Warblers have a plain brown appearance with a slightly darker cap. Females share similar coloration but with a duller appearance.
- Species Name: Limnothlypis swainsonii
- Length: 5.1-5.5 inches (13-14 cm)
- Weight: 0.3-0.4 ounces (8-12 g)
- Wingspan: 7.5-8.7 inches (19-22 cm)
These warblers breed in the southeastern United States and parts of the Midwest. During migration, they can be seen across the eastern United States. In winter, they migrate to Mexico and Central America.
Swainson’s Warblers prefer dense understory vegetation in swampy areas, where they forage for insects and spiders.
Fun Fact: Swainson’s Warblers are known for their secretive behavior, often remaining hidden within dense vegetation, making them challenging to observe.