Birds in all shapes, colors and sizes. Birds that fly, birds that walk, birds that chirp, birds that talk.
Hummingbirds are a group of small birds that eat nectar. The smallest bird is a type of hummingbird. Hummingbirds can beat their wings 12-90 times a second, which gives them a distinctive hum when they fly. Because they beat their wings so fast, they can hover and fly backwards in the same way that some insects can.