Scientific Name:   Setophaga coronata

Length:   4.7-5.5 in (12-14 cm)

Weight:   0.4-0.5 oz (12-13 g)

Wingspan:   7.5-9.1 in (19-23 cm)

Nest:   They may build their nests far out on a main branch or tuck it close to the trunk in a secure fork of two or more branches. he nest is a cup of twigs, pine needles, grasses, and rootlets. She may also use moose, horse, and deer hair, moss, and lichens. She lines this cup with fine hair and feathers, sometimes woven into the nest in such a way that they curl up and over the eggs.

Eggs:   4-5, sometimes only 3. Creamy white with brown and gray marks. Incubated usually by female, 12-13 days. Occasionally the male will cover the eggs.

Feeding Behavior:   They cling to the bark surface to look for hidden insects more than many warblers do, but they also frequently sit on exposed branches and catch passing insects like a flycatcher does. Common foods include caterpillars and other larvae, leaf beetles, bark beetles, weevils, ants, scale insects, aphids, grasshoppers, caddisflies, craneflies, and gnats, as well as spiders.

Young:   Both parents feed nestlings. Young leave nest after 10-12 days, can fly short distances 2-3 days later. First brood probably fed mostly by male after fledging.

Range:   They breed from eastern North America west to the Pacific, and southward from there into Western Mexico. The warbler breeds from eastern North America west to the Pacific, and southward from there into Western Mexico. During the winter, Yellow-rumped warblers often inhabit open areas with shrubs or scattered trees, that can provide them with some source of food supply.

Brief Description:   Yellow-rumped Warblers are fairly large, full-bodied warblers with a large head, sturdy bill, and long, narrow tail. Males are very shaded, and females are duller and may show some brown. Winter birds are paler brown, with bright yellow rump and usually some yellow on the sides.