"Seven endangered California condors — about 20 percent of Southern California's population — have been found with lead poisoning.

The birds started turning up sick about a month ago during random trappings"

"Officials don't yet know the source of the contamination, but a U.S. Fish and Wildlife official said the birds were likely poisoned by eating the carcasses of animals that had been shot by hunters."

http://news.yahoo.com/s/ap/20080604/ap_on_re_us/poisoned_condors