Add Yahoo as a preferred source to see more of our stories on Google. Hummingbirds have one of the highest metabolic rates of any vertebrate. They are the only birds capable of sustained backward ...

Ruby-throated hummingbirds fly non-stop across the Gulf of Mexico to reach the best breeding grounds first. The 600-mile journey takes 15-20 hours, and the birds double their body weight to prepare ...

Hummingbirds are fascinating little birds found all over the Americas. They are known for their beautiful colors, aerial acrobatics, and lightning-fast speeds. But did you know that hummingbirds can ...