General

Arctic Warbler: Medium-sized, active warbler with stout bill, olive-green back, olive-brown sides, and white throat and belly. Dark eye-lines contrast with pale yellow eyebrows curving upward behind eyes. Wings have faint pale bar on tips of greater coverts. Tail is square. Sexes are similar.

Range and Habitat

Arctic Warbler: Winters in Asia and migrates to western and northern Alaska in summer. Preferred habitats include birch woods, willow thickets, mixed coniferous-deciduous open forests, and grassy tundra.

Breeding and Nesting

Arctic Warbler: Five to seven white eggs, sometimes spotted with red brown, are laid in a sphere-shaped nest built by the female on the ground, hidden in thickets of willow and birch. Female incubates eggs for about 13 days.

Foraging and Feeding

Arctic Warbler: Diet includes insects and other small invertebrates.

Vocalization

Arctic Warbler: Song is a long, loud series of toneless, buzzing notes. Call is a buzzing "dzik."

Similar Species

Arctic Warbler: Dusky Warbler has dark brown upperparts, smaller bill, brown legs, dull white underparts, and lacks wing-bars.