Spends the winter in southwestern Mexico. Breed up north from British Columbia, Canada, south into Washington, Idaho, Montana, Western Wyoming, Nevada and California.
They live in forests, meadows and brushy areas. They migrate over the desert.
They are the smallest bird in North America, growing to at most 4 inches and weighing 1/10 of an ounce. They are green above and light below. Males have a red-streaked throat. Females have a white throat.
It flies all the way down to southern Mexico for the winter, making it the smallest long distance migrator in the world.
They hover near tubular flowers collecting nectar. They also eat small insects and drink from feeders.
Female lays 2 tiny eggs.
Species: S. calliope
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