Cooperative breeding in birds :  longterm studies of ecology and behavior / 
edited by Peter B. Stacey and Walter D. Koeing 
 - Cambridge :  Cambridge University Press,  1990 
 - 615 p. :  ill. ;  23 cm. 
<br/><br/> Includes index 
<br/><br/>Bibliograpy : p. 609-611 
<br/><br/><label>ISBN: </label>0521372984 
<br/><br/><label>LCCN: </label>89-9773 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Birds--Behavior<br/>Birds--Ecology<br/>Sexual behavior in animals