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 ...

There are over 360 hummingbird species in the family Trochilidae. Beating their wings up to 80 times a second, these amazing birds can complete deft aerial maneuvers and even fly backward without a ...

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 ...