13 cm (5") Common in western North America, rare in east. Thickets and shrubs, undergrowth.
Greenish-yellow faintly streaked underparts. Told from similar Tennessee Warbler by its yellow undertail coverts and faint streaks on underside.
Usually feeds on low branches.
Nests on ground.
Song: weak chippy-like trill.
Videos
Watch
Credit: naturalist97333
Images

Credit: Kenneth Cole Schneider