The Yellow-rumped Warbler (Dendroica coronata) is known as the Audubon's Warbler on the West Coast and the Myrtle Warbler on the East Coast. What's the difference? The West Coast variety has a yellow throat and a large white patch in the folded wing. The East Coast version has a white throat and 2 white wing bars.

This little warbler, about 5 inches, flits around in coniferous and mixed woods, chirping constantly, seeking insects. Its song is more of a buzz than a warble.

The nest is a bulky assemblage of twigs, roots and grass placed in a conifer. The clutch consists of 4 to 5 white eggs that are speckled with brown. The eggs are incubated for 12 to 13 days. The young are brooded for 10 to 14 days, at which point they can fledge.

The lifespan of the Yellow-rumped Warbler is about 7 years.

Class: Aves | Order: Passeriformes | Family: Parulidae | Genus: Setophaga | Species: S. coronata