Female Western Bluebird, Sialia mexicana, at nesting box, with an immature brown-headed Cowbird that it raised when a Cowbird laid its eggs in the bluebird nest, La Plata County, Colorado, USA, North America
Female Western Bluebird (Sialia mexicana), Feeding Young in Nest Box, Southwestern Colorado, United States, North America
Male Western Bluebird (Sialia mexicana), Feeding young in Nest Box, Southwestern Colorado, United States
