Arctic Warbler

Phylloscopus borealis




Leaf Warblers (Phylloscopidae)

Code 4


Code 6



Egg Color:

White sometimes with red brown spots

Number of Eggs:

5 - 7

Incubation Days:


Egg Incubator:


Nest Location:

On ground., Hidden in tall grass and sheltered by bushes and tall trees

Nest Material:

Grass and moss with lining of hair, feathers, and soft grasses.





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: Occurs in Fennoscandia and northern Asia, and is also established in North America, where they breed in Alaska. They migrate to Southeast Asia for the winter, having the longest migration route of any Old World insectivorous bird. 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.


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.

The ventral part of the bird, or the area between the flanks on each side and the crissum and breast. Flight muscles are located between the belly and the breast.
Parts of a Standing bird X
Head Feathers and Markings X
Parts of a Flying bird X