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.

If you're lucky enough to be visited by hummingbirds, you've probably spent many a moment marveling at them as they go about their busy lives. And who could blame you? They are some of the animal ...

Have hummingbirds visited your feeders this season? Our appreciation for our tiny avian neighbors is well documented, which is why our eyes are always peeled for a glimpse of a hummingbird flitting ...

Add Yahoo as a preferred source to see more of our stories on Google. Hummingbirds have one of the highest metabolic rates of any vertebrate. They are the only birds capable of sustained backward ...

It's time to wash the feeders and make some nectar, hummingbirds are back in Ohio. See where on this interactive map.