August 1980, Vol. 8, No. 4
Block Island
Robert Fox
Field Identification of the Lesser Black-backed Gull
Richard Veit
Notes on the Identification of Selasphorus and Archilochus Hummingbirds
Bruce Sorrie
Book Reviews:
A Guide to Hawk Watching in North America, by Heintzelman
Alden Clayton
Hawks and Owls of North America , by Heintzelman
Alden Clayton
The Spring Migration: March-May 1980
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