This tiny jewel is the smallest breeding bird in North America and the smallest long-distance avian migrant in the world. The average weight of males is approximately 0.09 oz, about half of that of an Anna's hummingbird, and a little more than the weight of a penny.

It breeds predominantly in mountain habitats, and despite its diminutive size, successfully withstands the chilly summer nights at high elevations. It is a common summer resident of the Blue and Wallowa Mountains and other high ranges east of the Cascade summit. Spring and fall migrants are rare at lower elevations east of the Cascades.

Hear the call of the Calliope hummingbird

Photo by Cinthea Fox, Flickr