Boreal Birds
300+ species, billions of birds rely on Canada's boreal forest as critical breeding grounds
© Alnus/Wikimedia Commons (CC 3.0)

Arctic Warbler

Arctic Warbler
Phylloscopus borealis
Perching Birds | Family: Old World Warblers and Gnatcatchers, Sylviidae

An estimated 36% of the species' North American population breeds within the Boreal Forest.

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Overview

This bird is the only North American pioneer from a large genus of similarly colored Old World warblers. It most resembles the Tennessee Warbler, whose range it does not overlap.

Description

4 3/4" (12 cm). Olive green above, with dark line through eye and light greenish-yellow eyebrow. Whitish throat and belly; olive-gray sides; indistinct single wing bar. Pale legs.

Voice

A quick trill, introduced by zick or zick-zick-zick. The call is also zick or zirrup.

Nesting

5-7 pink-speckled white eggs in a domed cup nest placed in grass on the ground.

Habitat

Birch woods, willow thickets.

Range/Migration

Breeds in western and northern Alaska. Also in northern Eurasia.