The horseshoe crab's annual spawning produces millions of eggs that are the lifeline for a tiny bird called the red knot. Watch the full episode now.

While gossip columnists may have full reign over the sex lives of Hollywood stars, scientists have invaded the habitats of the most infamous cheating animals.

Sheer nerve, character and intelligence have earned ravens a place in myth and legend. Watch the full episode of Ravens online.

A great crested grebe chick is able to dive and swim at birth, but it's always nice to hitch a ride instead.

Check out this high-speed video footage of hummingbirds catching insects, which provide protein in their diet.

(Airs Sunday, October 11) Humans have had a unique relationship with raptors for centuries. Now, using the tricks of raptors, engineers have devised fighter jets with unprecedented maneuverability and stealth.

The U.S. State of the Birds report reveals that one-third of our nation's birds are in trouble. But Allison Argo feels optimistic. At least now the issue is getting attention.

(Part Two airs Sunday, March 15) Two great films provide an account of the inner workings of one of the last truly wild places on earth.

Following their parents' lead, the flamingo chicks march across the barren desert for weeks.

Birds are capable of learning and mastering complex social behavior, but there's one behavior that never ceases to fascinate -- their ability to use tools.