Western Bluebirds are small thrushes that usually perch upright. They are stocky with thin, straight bills and fairly short tails.
Male Western Bluebirds are shiny blue above with rust-orange extending from a vest on the breast onto the upper back. Females are gray-buff with a pale orange wash on the breast and blue tints to the wings and tail. The throat is blue in males and gray-buff in females, and the lower belly is whitish.
These birds are highly social, and usually feed in flocks during the non-breeding season. They hunt for terrestrial insects by dropping to the ground from a low perch. Western Bluebirds also frequently feed on berries in trees. Western Bluebirds rely on trees both for nesting cavities and hunting perches, and also perch on fences and utility lines.
Look for Western Bluebirds in open woodland, both coniferous and deciduous. They also live in backyards, burned areas, and farmland, from sea level far up into the mountains.