Where Do They Go, and How Do Hummingbirds Sleep?

Have you ever wondered what happens to hummingbirds once the sun goes down? These tiny, high-energy birds have a few favorite ...
Birds & Blooms on MSN

The Hummingbird Heart Rate Is Unbelievably Fast

Hummingbirds are speedy little creatures. Ruby-throated hummingbirds flap their wings at a blurry (and tough to photograph!) ...