Endangered Species

Republicans in the U.S. House introduced a bill to remove the Mexican gray wolf from the endangered species list.

A childhood story about the disappearance of a Costa Rican toad sent Trevor Ritland on a quest. The Flagstaff writer and documentary filmmaker tells the story in his new book, out today.

Federal agencies have finished digging out a side channel below Glen Canyon Dam that's been a breeding ground for nonnative fish.

National Park Service officials are working to eliminate a spawning ground for harmful nonnative fish in Glen Canyon.

The Southwestern population of endangered wild Mexican gray wolves has grown for the ninth consecutive year to at least 286.

State and federal officials say recent surveys show there are double the number of endangered Mount Graham red squirrels than anticipated.

Biologists have begun re-introducing endangered black-footed ferrets in Aubrey Valley near Seligman. It's Arizona’s first ferret reintroduction in more than 30 years.

The U.S. Fish and Wildlife Service says an endangered Mexican gray wolf was found dead west of Flagstaff last week.

Park officials say breeding pairs of the Yellow-billed Cuckoo hadn't been observed in Petrified Forest National Park since the 1980s until two were spotted over the summer.

For the first time in the United States, biologists have used a flu vaccine designed specially to protect the endangered California condor.