Love 'em or not, the vulture bird is an essential part of our ecosystem. Find out why vultures don't sing, how long they live ...

With threats of avian flu and lead poisoning, biologists are working overtime to care for a species that nearly went extinct.

The Andean condor is considered threatened but is in far better shape than its California cousin. Reintroduction programs are working to grow populations of these South American birds.

Gymno comes from the Greek word gymnast, meaning "naked," and refers to the condor's featherless head; gyps is Greek for "vulture." DESCRIPTION: The largest flying land birds in North America, ...