Birdwatching in 1986

Indiana Birds and Their Haunts, Second Edition, Second Edition: A Checklist and Finding Guide by Keller, Timothy C., Keller, Shirley A., Keller, Charles E.

Gulls: A Guide to Identification by Grant, Peter J., Grant, P. J.

Migrations of Hawks by Heintzelman, Donald S.

Current Ornithology, Volume 4 by