Calliope Hummingbird (Selasphorus calliope) Trochilidae, male
Blue Mountain National Recreation Area, MT
May 16, 2016
Calliope hummers are the smallest breeding bird in North America north of Mexico. Males perform an extravagant display to females that involves a steep dive, a barrel-roll, and a high-pitched sound produced by their tail feathers. Watch the whole courtship display and learn more about how it’s done here!