Web edition: July 20, 2012
Thirty years ago, the California condor came dangerously close to extinction. Biologists took action, and their efforts worked. The big, bald birds lived, and their numbers grew — from 22 in 1982 to several hundred today.
But the bird’s apparent success story may be misleading, a new study finds. By studying blood and feathers from condors in the wild, researchers have confirmed that the birds are suffering a slow poisoning.