They are easy to identify with the crisp black-and-white crown stripes of the adults and their pink or yellow bill. First winter (immature) birds sport buff and brown head stripes. White-crowned ...

One of the most common winter sparrows, the white-crowned typically occurs in flocks, which may involve more than 100 birds ... prominent white throat, and yellow supraloral.

According to the Cornell Lab of Ornithology, white-crowned sparrows that breed along the Pacific Coast have yellow bills, while those that breed from Alaska to Hudson Bay sport orange. Birds that ...

Its tinier relative the golden-crowned kinglet was common, as was our hardiest warbler, the yellow-rumped warbler ... the stripes black and white. Duller first-year birds were also present ...