The mountain bluebird is a medium-sized bird weighing about 30g with a length from 16–20cm. Mountain bluebirds can be found in much of the western United States and Canada, especially during the breeding season.
The mountain bluebird (Sialia currucoides) is a small migratory thrush that is found in mountainous districts of western North America. It has a light underbelly and black eyes. Adult males have thin bills and are bright turquoise-blue and somewhat lighter underneath. Adult females have duller blue wings and tail, grey breast, grey crown, throat and back.