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, Donald, Stokes, Lillian Q.

Current Ornithology, Volume 8 by

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

Stokes Butterfly Book: The Complete Guide to Butterfly Gardening, Identification, and Behavior by Williams, Ernest, Stokes, Donald, Stokes, Lillian Q.

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

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