The Yellow Warbler, Dendroica petechia, is a New World
warbler. It is the most widespread Dendroica warbler,
breeding in almost the whole of North America and down to northern South
America. It has 35 geographical races, which can be divided into three main
Length is 4 inches. It is a small, active,
insect-eating bird. The yellow warbler has a thin, pointed bill, mostly
yellow plumage. Its upperparts greenish-yellow
and tail with yellow feather edges. It has a plain yellow face with yellow
eye ring surrounding dark eye and yellowish legs. The adult male yellow
warbler has golden yellow plumage with rusty streaks on breast and flanks.
Female and immature yellow warblers have plain yellow plumage, their streaks
on breast absent or barely noticeable.
Warblers nest in trees, building a cup nest. Aestiva lays 3-6 eggs, but the
two other groups, which breed in mangroves, lay fewer eggs, as would be
expected for tropical races.
These birds feed on insects and
spiders, but northern races will also take some berries.
The yellow warbler song is a musical sweet sweet sweet,
I'm so sweet, although it varies considerably between races. The call is a
soft or harder ship.
This species is a regular victim of the Brown-headed
Cowbird, a nest parasite.
warbler Dendroica petechia - USGS Patuxent Bird Identification