Small but speedy. Tiny but aggressive. Little bodies, big appetites. Hummingbirds are a study in extremes. They are the lightest North American birds. Most weigh less than two pennies at 3 to 4 grams.

Hummingbirds have been in Delaware for months. But how much longer will that last? An expert explains how to create food for hummingbirds. There's an interesting reason why hummingbirds fight. Pumpkin ...