For the first time in 100 years, California condors flying over Yurok land, thanks to an intensive reintroduction programme.

Because of warmer winters, Florida scrub-jays are now nesting one week earlier than they did in 1981. But these early birds are not always getting the worm. A new analysis of data from a long-term ...

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.