This website lists species that are on the U.S. Fish and Wildlife Service endangered species list. This site covers not only endangered birds, but also other animal species that are endangered.
U.S. Fish and Wild Life Service Endangered Species Program
This site has information on U.S. endangered or threatened animal species. You can type in a search term on this site to see the status of a particular animal species.
Christmas Bird Count
Take part in the 115th Christmas bird count - takes place from December 14, 2014 through January 5, 2015. Participation is open to everyone. Visit our website for details.