Patterson, I. J.  <br/><br/>
The shelduck:  a study in behavioural ecology / 
I.J. Patterson illustrations by Chris Furse. 
 - Cambridge:  Cambridge University Press,  1982. 
 - x,276p:   ill maps;   24cm 
<br/><br/>Bibliography: p256-267. - Includes index 
<br/><br/><label>ISBN: </label>0521246466 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Shelduck--Behavior.<br/>Birds--Behavior.