Hi Starr, Mountain Bluebirds breed in the western U.S. and Canada, and are not usually found in Alabama. You may likely have an Eastern Bluebird nest. Feel free to check out the differences between Mountain and Eastern Bluebirds on our All About Birds pages.
Are you sure that they’re Mountain Bluebirds? it would be rare if they were.
Hi Starr, Mountain Bluebirds breed in the western U.S. and Canada, and are not usually found in Alabama. You may likely have an Eastern Bluebird nest. Feel free to check out the differences between Mountain and Eastern Bluebirds on our All About Birds pages.