The Mountain Bluebird (Sialia currucoides) is a medium-sized bird weighing about 1.1 ounces. The Mountain Bluebird is migratory. Their range varies from Mexico in the winter to as far north as Alaska, throughout the western U.S. and Canada. Northern birds migrate to the southern parts of the range; southern birds are often permanent residents. Some birds may move to lower elevations in winter. They inhabit open rangelands, meadows, generally at elevations above 5,000 feet. Contrary to popular...
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The Mountain Bluebird (Sialia currucoides) is a medium-sized bird weighing about 1.1 ounces. The Mountain Bluebird is migratory. Their range varies from Mexico in the winter to as far north as Alaska, throughout the western U.S. and Canada. Northern birds migrate to the southern parts of the range; southern birds are often permanent residents. Some birds may move to lower elevations in winter. They inhabit open rangelands, meadows, generally at elevations above 5,000 feet. Contrary to popular belief, Mountain bluebirds are not a species of concern in the United States. The turn around in Mountain bluebird numbers is due to the overwhelming efforts of landowners in the West to provide nest boxes for these birds. At one time, Mountain bluebird numbers were threatened because of increased competition for decreasing natural cavity nesting spots by invasive species such as House Sparrows and European Starling.
Frog Rock, Yellowstone.
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