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.

So, whether you have hummingbirds in your yard and want to know more about your gorgeous summer guests, or are simply curious about the wonders of the natural world, this guide to fascinating facts ...

Hummingbird migrations take place in spring and fall and those events are cause for excitement among many people. "They are the gateway drug to bird watching because they are incredibly charismatic," ...

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 ...

A look at the tiny and mighty migrators buzzing around our flowers. There are more than 350 different species of hummingbirds across the Americas. Their little bodies have big appetites and they eat ...

Put our your feeders and grab your binoculars, hummingbird migration season is upon us. Here's when and how to spot the little birds in Arizona.