The
Eastern Yellow Wagtail and the Western Yellow Wagtail (not found in North
America) were recently split from the former "Yellow Wagtail"
(Motacilla flava), although some authorities continue to maintain the old
classification of one Yellow Wagtail species. Most Eastern Yellow Wagtails
are found as breeding birds in northern Asia, but there are also breeding
birds in northern and western Alaska. Long-distance migrants, Eastern
Yellow Wagtails migrate to southeast Asia or the Australia region for the
winter. As with other wagtail species, Eastern Yellow Wagtails do indeed
frequently wag their tail as they walk along the ground, foraging for
insects and other food items.
Habitat: In the Alaska summer breeding range, they
are found on tundra, in areas with thickets of dwarf willow or dwarf birch.
Diet: Feeds mostly on insects and spiders, as well
as small mollusks such as snails, and other invertebrates such as worms.
Also may feed on berries and seeds.
Behavior: Feeds by walking on the ground, often
making fast runs to capture insects when they are spotted. They will
also sometimes catch flying insects in flight, or hover briefly while
gleaning insects from vegetation.
Nesting: The nest of an Eastern Yellow Wagtail is
a cup of grasses, weeds, mosses, and lichens, lined with feathers or animal
hair. The nest is built on the ground, usually under a small shrub or
next to a clump of grass. The female usually lays 4 or 5 eggs, and
both parents help to incubate them. When the eggs hatch, both parents
help to raise the young. The young leave the nest after about 2 weeks.
Song: Song of the Eastern Yellow Wagtail is a
series of repeated short notes
Migration: Long-distance migrant, with birds found
in Alaska normally wintering in Australia and southeast Asia.
Similar Species:
Coloration distinguishes it from other Wagtail species that have been found
in North America.
Conservation Status: Populations may be
decreasing, but they are still found over a wide geographic area and are
relatively common in some areas.
The IUCN lists the
Yellow Wagtail as a species of "Least Concern".