Woodpeckers: A Guide to the Woodpeckers, Piculets and Wrynecks of the World (Helm Identification Guides) by David A. Christie, Hans Winkler English | 30 Sep 2010 | ISBN: 9781408135044, 1873403259 | True EPUB/PDF | 406 pages | 18.2/20.6 MB
Wildfowl: An Identification Guide to the Ducks, Geese and Swans of the World (Helm Identification Guides) by Steve Madge, Hilary Burn English | 30 Sep 2010 | ISBN: 9781408138953, 0713636475 | True EPUB/PDF | 298 pages | 18/30 MB
Raptors of the World: A Field Guide (Helm Field Guides) by James Ferguson-Lees, David A. Christie English | January 1, 2005 | ISBN: 0713669578 | True EPUB/PDF | 320 pages | 137/127 MB