Calliope Hummingbird

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{{Taxobox | color = pink | name = Calliope Hummingbird | image = CalliopeHummingbird23.jpg | regnum = Animalia | phylum = Chordate|Chordata | classis = Aves | ordo = Trochiliformes | familia =Trochilidae | genus = Stellula | genus_authority = John Gould|Gould, 1861 | species = S. calliope | binomial = Stellula calliope | binomial_authority = (John Gould|Gould, 1847) }}

The Calliope Hummingbird, Stellula calliope, is a very small hummingbird and the smallest bird found in Canada and the United States. It is the only member of the Stellula genus.

Their breeding habitat is open shrubby areas, usually at higher altitudes, in western North America from British Columbia south to Colorado and southern California. The female builds an open cup nest in a conifer under an overhanging branch.

They are migratory, generally leaving their breeding grounds earlier than most birds (although not as early as the Rufous Hummingbird) to take advantage of the late-summer wildflowers in the mountains of western North America. Most winter in western Mexico.

These birds feed on nectar from flowers using a long extendable tongue or they also catch insects on the wing. While collecting nectar, they also assist in plant pollination.

This bird was named after the Greek muse Calliope. The species name means "little star".