Birdwatching in 1991

Population Biology of Passerine Birds: An Integrated Approach by

Bird Trapping and Bird Banding: A Handbook for Trapping Methods All over the World by Bub, Hans

The Bluebird Book: The Complete Guide to Attracting Bluebirds by Stokes, Lillian Q., Stokes, Donald

Current Ornithology, Volume 8 by

Bird-Parasite Interactions: Ecology, Evolution, and Behavior by

The Common Tern: Its Breeding Biology and Social Behavior by Burger, Joanna, Gochfield, Michael

The Common Tern: Its Breeding Biology and Social Behavior by Gochfeld, Michael, Burger, Joanna