Hummingbirds can hover, fly upside down for a moment, and even fly backward, thanks to shoulders that let their wings rotate in a full figure-eight.

In flight, a hummingbird's heart can beat more than 1,200 times a minute, and its wings can beat up to 80 times a second.

The bee hummingbird of Cuba is just over 2 inches long and weighs less than a dime, making it the smallest bird in the world.

Hummingbirds remember every flower and feeder they visit, and many return to the very same yards year after year.

A hummingbird can drink about its own body weight in nectar every day, visiting hundreds of flowers to do it.

A hummingbird's forked tongue flicks into nectar about 13 times a second, trapping it with tiny fringes along the tip.

On cool nights, hummingbirds slip into torpor, a deep rest where their heart rate and body temperature drop to save energy until morning.

Hummingbirds have such tiny feet that they cannot walk or hop. They perch, shuffle sideways, and fly everywhere else.

There are more than 360 hummingbird species, and every one of them lives only in the Americas.