Chestnut-sided Warbler

These birds are migratory, wintering in Central America south to northern Colombia, with an unconfirmed sighting from as far south as Ecuador; they are also very rare vagrants to western Europe.

The Chestnut-sided Warbler is classified as Least Concern. Does not qualify for a more at risk category. Widespread and abundant taxa are included in this category.

“Populations of Chestnut-sided Warbler are declining in the Southeast, probably due to habitat loss and fragmentation. More northern populations are stable or undergoing local population declines.” (Adapted from Warbler Watch: Chestnut-sided Warbler, which also has a wav. More

The Chestnut-sided Warbler (Dendroica pensylvanica) is a New World warbler. They breed in eastern North America and in southern Canada westwards to the Canadian Prairies. They also breed in the Great Lakes region and in the eastern USA. These birds are migratory, wintering in Central America south to northern Colombia, with an unconfirmed sighting from as far south as Ecuador; they are also very rare vagrants to western Europe. More

The Chestnut-sided Warbler was virtually unreported during the time of Audubon and other early American naturalists, but has increased greatly in numbers since the clearing of eastern forests in the 1800 More

Adult male Chestnut-sided Warbler in Warren, photographed earlier this month Photo by Don Reimer by Don Reimer In a later field journal, John James Audubon wrote: "Beginning in May 1808, I shot five of these birds on a very cold morning near Potts-Grove, Pennsylvania. I have never met a single individual of this species since." Accordingly, this warbler was named "Dendroica pensylvanica. More

The Chestnut-sided Warbler is currently rated as Least Concern. This bird species primarily breeds in the eastern regions of North America and southern portions of Canada. This bird has also been spotted in the Great Lakes region. This is a migratory bird that travels to Central America during the winter. It has also been spotted in Western Europe. Due to an increase in population of late, this bird is not considered to be in immediate danger of population decline. More

Chestnut-sided Warbler can be found throughout Tennessee during spring and fall migration, but nests only in the mountains in the eastern portion of the state. The breeding range extends from south-central Canada to Nova Scotia, south to southern Pennsylvania, and along the Appalachian Mountains to northern Georgia. In winter, it joins mixed species flocks with other migrants and resident birds on the wintering grounds in Mexico and Central America. More

Chestnut-sided Warbler 4 - Galveston Co, TX - April Chestnut-sided Warbler 7 - Galveston Co, TX - April Chestnut-sided Warbler 8 - Galveston Co, TX - April Chestnut-sided Warbler 1 - Galveston Co, TX - April Site Navigation More

Chestnut-sided Warbler Range MapView dynamic map of eBird sightings Field MarksHelp - * Male breedingPopOutZoom In Male breeding * © Marie Read * FemalePopOutZoom In Female * © Kevin T. More

In the summer, male Chestnut-sided Warblers are unmistakable in appearance. They display dark-streaked gray backs, white faces, black eyestripes and greenish crowns. Their underparts are white, with chestnut flanks, and theyalso have two white wing bars. The adult females resemble washed-out versions of the summer male, and in particular, the females lack the strong head pattern, and also have less chestnut coloring on their flanks. Non-breeding birds of both sexes have greenish heads, and greenish upperparts which are usually unstreaked. More

The Chestnut-sided Warbler is a trans-Gulf migrant that arrives along the Gulf Coast in mid-April. Begins to arrive on its northern breeding grounds in mid-May. Status: Populations of Chestnut-sided Warbler are declining in the Southeast, probably due to habitat loss and fragmentation. More northern populations are stable or undergoing local population declines. More

Bent Life History for the Chestnut-sided Warbler - the common name and sub-species reflect the nomenclature in use at the time the description was written. CHESTNUT-SIDED WARBLER DENDROICA PENSYLVANICA (Linnaeus) HABITS Many changes have taken place in the distribution and relative abundance of many birds in different parts of our land since the settlement of the country, owing to the changes wrought in the landscape by man. More

The Chestnut-sided Warbler in breeding plumage has blackish upperparts striped with white, a yellow crown, a black frame around white cheeks, yellowish wing bars on dark wings, and chestnut red along the sides just below the wings Males have a bolder black face frame. chestnut-sided warbler Female - Females have a paler face frame. More

An adult Chestnut-sided Warbler has a yellow crown with a chestnut colored side. They have a narrow white eye-ring and two pale yellow ring bars. The female does not have as distinct or vivid chestnut side. They are 11-14cm and weigh 8-10 grams. Habitat/Diet Chestnut-sided Warblers can be found in second growth deciduous forests and in bushy pastures. This warbler feeds primarily on insects and eats potentially harmful insects, helping farmers. The warblers will eat some fruit. More

Female chestnut-sided warblers build a nest of grass and bark, lined with hair and rootlets, a few feet off the ground in a small tree or bush. The female also incubates the eggs alone, but both parents care for the young. More

Chestnut-sided Warbler Habitat Model go to: USFWS Gulf of Maine Watershed Habitat Analysis go to: Species Table Feedback: We welcome your suggestions on improving this model! Draft Date: March, 2001 Species: Chestnut-sided warbler, Dendroica pensylvanica Use of Study Area Resources: Reproduction throughout study area. More

Chestnut-sided Warblers are insectivorous, but will include berries in their winter diets. They forage actively in shrubs and small trees, and sometimes will attempt to catch insects in mid-air. This bird's numbers have increased as second growth forest became more common in the east in the late 19th century; their numbers have declined slightly since then. More

The chestnut-sided warbler sings two basic song types: one is accented at the end and the other is not. The accented songs are usually sung to attract females and the unaccented songs are sung to defend territories against other aggressive males. Males that can only sing the unaccented song are less successful at attracting mates than males that sing both songs. Similar Species Bay-breasted warbler. More

Chestnut-sided Warblers have a thin chestnut line along their breast that gives the bird its name. Both sexes are similar, with a yellow and green crest and a streaked back and white underparts. The bill is thin and pointed, the legs are black, and the wings are barred with white or yellow. They have a white patch on their cheek accentuated by a black eyestripe that extends down the sides of the throat. More