Calliope Hummingbird - Average Length: 3.3 inches

The Calliope Hummingbird, the tiniest bird in North America, flies all the way from Canada in the north to Mexico in the south. Given that these birds are just about 3.3 inches long, the circular migration route they follow travels 5,000 kilometers. They often fly slowly, staying close to blooms that larger, potentially aggressive hummingbird species would miss.

However, these birds are also capable of remarkable bravery. They have also been observed chasing after large, raptors like red-tailed hawks during mating season. It's one of the smallest birds and one of the prettiest to look at. Male hummingbirds may be easily distinguished from the many other species of hummingbirds by their distinctive splash of magenta that covers their chin and breast, as well as by the distinctive U-shape in which they execute their courting dance.