Hummingbirds are the smallest birds in the world, but truly one of the most fascinating creatures on the planet. Because of their high metabolism, hummingbirds spend a great deal of energy flying so they must feed almost constantly.
Hummingbirds are the smallest birds in the world, but truly one of the most fascinating creatures on the planet. Because of their high metabolism, hummingbirds spend a great deal of energy flying so they must feed almost constantly.