
Yellow-rumps (or butter-butts as they are sometimes affectionately called), are most easily recognized by that very feature: a yellow rump patch, which may be partially obscured by their wings when perched. But as a whole, warblers are not necessarily particularly melodious despite their name.

But warblers are very different from our other small yellow birds, the goldfinches.

We have fewer warbler species overall in the west, and that group is further winnowed down in winter when most insect-eating birds head south, leaving us with two main species which pass the winter with us: the yellow-rumped warbler and the Townsend’s warbler. In the eastern part of the country, spring warbler migration is the most thrilling part of the year for birdwatchers, with the treetops suddenly filled with an influx of newly-arrived and soon-to-depart species-colorful, active, challenging, gone.

Warblers evoke high passion from many birders-a passion often opaque even to sympathetic, but more casual bird lovers. Yellow-rumped warbler eating mealworm - local photo by S. Birds of the Month: the Winter Warblers Yellow-rumped Warbler and Townsend's Warbler
