This little perpetual-motion machine needs to eat constantly because of its high metabolism and high body temperature. If it ...

When we were kids we all learned that birds fly south for winter. Even though it was probably one of the first fascinating facts you learned about birds, it’s not entirely true. Bird migration ...

Every fall, small-winged birds, often called “winter finches,” migrate to the northern regions of North America. Most finches are the same size, making it harder to tell each breed apart.

You might not spend as much time in your garden during winter, but if you keep an eye out you'll still see plenty of bird activity. Here are some of the birds you're likely to spot spending time in ...