References

Books: From Egg to Animal by Molly Fleck
            Flap and Sing by May Nelson
            Animal Kingdom by Steve Parker and Martin Walters
Websites: http://globio.org
                http://birdtricks.com
                http://crittersonthings.com
                http://www.animals.nationalgeografic.com
                http://honoluluzoo.org
                http://www.ptybirds.com