Birds of the world/ Volume 7. 
Jason A Mobley, editorial advisor. 
 - New York:  Marshall Cavendish;  2009. 
 -  colour illustrations,  28 cm. 
 -  Volume 7: Parrots and Cockatoos- Ring- billed Gull.  9780761477754 .
<br/><br/><label>ISBN: </label>
<br/><br/><label>Subjects--Topical Terms: </label><br/>Birds<br/>Birds - pictorial works.
<br/><br/><label>Dewey Class. No.: </label>598 BIRD