Least Bell's vireos winter in Southern Mexico. They head south by September and come back by mid-March to early April. Breeding Season. These birds ...

However, one subspecies, the Least Bell's Vireo of California and Baja California, is listed as federally endangered, primarily from loss of riparian habitat ...

Least Bell's vireos are small birds. They are only 11.5-12.5 centimeters long. (About 4.5 to 5.0 inches) They have short rounded wings and short, ...

A tireless little bird of thickets and thorn scrub, the Bell's Vireo nests from the Midwest to the Southwest and into northern Mexico. Though plain in plumage, ...

A shy, secretive, and silver-tongued songbird, the tenacious least Bell's vireo has been to the brink of extinction and back in recent decades. Although ...

DESCRIPTION: Least Bell's vireos are small songbirds, generally no more than five inches in length, with a seven-inch wingspan. They have dull, ashy-grey heads; ...

The least Bell's vireo (Vireo bellii pusillus) is an endangered subspecies in Southern California. Consideration of Bell's vireo has been a factor in several ...

Least Bell's vireo is 4 ¾ -5 inches in size, and is smaller than a sparrow. Its coloring is dull olive-gray above, whitish below, a faint white eye ring and ...

The least Bell's vireo is a small, secretive songbird (4-5 inches long) with short, round wings, straight bills, and feathers that are gray above and pale ...

The Least Bell's vireo is a small songbird inhabiting riparian vegetation along meandering rivers of southern California. It has a plain, ash gray head.