12 of the World's Smallest Birds (Photo Gallery)

Some little birds are really hard to believe because they're battery-size and gorgeous. Usually it is the flashiest birds that that manage to get our attention. Small birds are the most fascinating and mesmerizing creatures on our planet. Their unusual flight patterns, multicolored plumage, distinctive calls bring us pleasure and cheerfulness. Small birds play a very significant role in reproduction of plants and indication of season change.

Costa's Hummingbird (Calypte costae): The Costa's hummingbird is native to North America's southwest and flourishes in the desert setting. It is one of the smaller hummingbird species at 3 to 3.5 inches long and 0.1 ounces. The male has a brilliant purple plumage across its head.