Population Demography of Northern Spotted Owls (Studies in Avian Biology)
by Eric Forsman
ISBN 13: 9780520270084
Format: Hardcover (120 pages) Publisher: University of California Press Published: 02 Aug 2011
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A Field Guide to the Birds of Hawaii and the Tropical Pacific
by H. Douglas Pratt,Phillip L. Bruner,Delwyn G. Berrett
ISBN 13: 9780691023991
Format: Illustrated (528 pages) Publisher: Princeton University Press Published: 01 Jun 1987
Birds of East Asia (Helm Field Guides)
by Mark Brazil
ISBN 13: 9780713670400
Format: Paperback (528 pages) Publisher: Helm Published: 19 Dec 2008
Birds of Western North America: A Photographic Guide (Princeton Field Guides): 56
by Paul Sterry,Brian Small,Brian E. Small
ISBN 13: 9780691134284
Format: Illustrated (416 pages) Publisher: Princeton University Press Published: 21 Sep 2009
Gulls of Europe, Asia and North America (Helm Identification Guides)
by Klaus Malling Olsen
ISBN 13: 9780713670875
Format: Hardcover (608 pages) Publisher: Helm Published: 20 Sep 2004