Crossley, Richard. <br/><br/>
The Crossley ID guide.  Raptors / 
 Raptors. 
Richard Crossley, Jerry Liguori, and Brian Sullivan. 
 - 286 pages :  color Illustrations, color maps ;  26 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>9780691157405 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Birds of prey--North America--Identification.<br/>Falconiformes--North America--Identification.