The Eastern Bluebird, Sialia sialis, is a small thrush (Family Turdidae) with a plump body, relatively short legs, and a short straight bill. The males are a brilliant cerulean blue on the back, head, and shoulders , while the throat and breast are a rust color. The colors of the female are more subdued: grayish back with blue-gray wings and tail, and a muted burnt orange breast. The perceived color, however, can be significantly affected by ambient light, especially to the bluebirds themselves. Unlike humans, bluebirds see in the ultraviolet range, and recent research suggests that males reflect strongly in the UV range.
Avian Note Art 