Learn what a Calliope hummingbird looks like, where to find these tiny birds in the U.S., and how to attract them.

In pursuit of the world’s smallest bird, we’ve come to the backyard of a flamingo pink house in Palpite, Cuba. Ornithologist Christopher Clark has a car full of gear to unload: cameras ...

The Weebill (Smicrornis brevirostris) is Australia’s smallest bird and is the smallest bird outside of the hummingbird family. It is around 3.1 inches in length and weighs just 0.2 ounces. It ...

The wings of the world’s tiniest birds are a near-invisible blur ... that has become a haven for the declining species. The bee hummingbird, which measures just five to six centimetres (two ...