Birds of central Pennsylvania /

Caption title.

Checklist of Everglades National Park birds.

Authors: William B. Robertson, Jr., Joseph Curtis Moore.

Birds of the State College Region, Pennsylvania /

Cover title.

Birds and their attributes.

"Unabridged and unaltered republication of the work first published by Marshall Jones Company in 1925."

An informal report of the first year's work in an experiment in recording the songs of wild birds.

Cover title: Recording birdsongs.

Studies on the effects of DDT on birds.

Mode of access: Internet.

Annotated field list, birds of southern California /

Original edition "compiled and published in 1953 for the Los Angeles Audubon Society."

Migration of birds /

Includes index.

"Every bird" a guide to the identification of the birds of woodland, beach and ocean. With one hundred and twenty-four line illustrations

Mode of access: Internet.

Parrots and related birds,

Includes index

Birds and their attributes,

Includes index.

Mammals and birds of Alaska /

Mode of access: Internet.

The birds of the Anamba Islands /

At head of title: Smithsonian Institution. United States National Museum.

Birds from the Yucatan peninsula,

Caption title.

Date guide to birds of western New York and adjacent Ontario.

"An aid to reporting unusual observations."