Blackpoll Warbler

The Blackpoll Warbler (Dendroica striata) is one of the most abundant warblers in the East and has an enormous breeding range in the northern part of the continent. During migration in late May, and again in September and early October, hundreds may be seen in a single day.

Its diet consists mostly of insects and berries. During the breeding season it eats aphids, scale insects, caterpillars, beetles, gnats, mosquitoes, cankerworms, sawflies, wasps, ants, termites and other insects. It may also eat spiders and their eggs, pokerberries, and a few seeds.

A few males have more than one mate per nesting season. Females return to the nest site of previous year and mate with male holding that territory. The nest is a bulky open cup built by female. Male feeds female on nest during incubation. Nestlings are fed by both parents.

The Blackpoll Warbler breeds in low northern spruce forest and in alder thickets north of the Arctic Circle and north of tree-line. During migration it is found chiefly in tall trees in forests, parks and gardens. In winter it can be seen in wooded areas, often in canopy of trees.

This species is abundant, but may be decreasing in southern parts of breeding distribution. It may become vulnerable to loss of habitat, especially on winter range.



Blackpoll Warbler Dendroica striata

 

 


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