Eating On the Fly

Today is Hummingbird Day. The tiny birds can hover in midair, by beating their wings up to 200 times-per-second. Larger types of hummingbird hatch from eggs the size of a bean, but the smallest bird in the world, the 2-inch-long bee hummingbird, lays 5-millimeter-long eggs, in nests made of cobwebs and lichen.