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 ...

Hummingbirds use torpor to survive long migrations when food is scarce. Researchers found that they regulate fat reserves ...

The bee hummingbird is the world's smallest bird. It is about 2.25 inches long and weighs less than 2 grams, which is about the same as a cashew nut ...

While the smallest dinosaurs, such as the bird-like Microraptor, weighed hundreds of grams, the bee hummingbird weighs just 2g. "Animals that become very small have to deal with specific problems ...

Weebill, with short, stubby, and pale beak, is one of world's smallest birds. It can grow up to 8-9 cm long and weighs around 6 grams ...

Director Sally Aitken showcases the profound lessons tiny birds impart about kindness and hope in a new documentary.