The Western Bluebird is a small thrush. Males:bright blue on top/throat w/orange breast/sides, brown on back, & a gray belly & undertail. Females have dull blue body/wings/&/tail, a gray throat, dull orange breast, gray belly/undertail. Baby Western Bluebirds have spots on their chest/back. Western Bluebird: a blue (male) or gray (female) throat. Eastern Bluebird has an orange throat. Mountain Bluebird has no orange color on its body. N. America. Wikipedia.