Although hummingbirds include some of the smallest bird in the world, they belong to one of the largest families of birds. Hummingbird are native to tropical rain forests but can be found in deserts, mountains, and plains. Their range is [[North America]], [[Central America]], and [[South America]]. Their name refers to the humming sound from their beating wings. There are more than 300 kinds of hummingbirds. The smallest of these is the [[Bee Hummingbird|bee hummingbird]]. It weighs approximately 1.8 grams and is about 5 centimeters in length. The [[Giant Hummingbird|giant hummingbird]] is the largest hummingbird. It weighs 18-20 grams and measures eight and a half inches in length. | Although hummingbirds include some of the smallest bird in the world, they belong to one of the largest families of birds. Hummingbird are native to tropical rain forests but can be found in deserts, mountains, and plains. Their range is [[North America]], [[Central America]], and [[South America]]. Their name refers to the humming sound from their beating wings. There are more than 300 kinds of hummingbirds. The smallest of these is the [[Bee Hummingbird|bee hummingbird]]. It weighs approximately 1.8 grams and is about 5 centimeters in length. The [[Giant Hummingbird|giant hummingbird]] is the largest hummingbird. It weighs 18-20 grams and measures eight and a half inches in length. |