Tinbergen, Niko <br/><br/>
Signals for survival 
[by] Niko Tinbergen and Hugh Falkus; drawings by Eric Ennion. 
 - Oxford  Clarendon Press  1970. 
 - 80 p. (chiefly illus. (some col.))  29 cm. 
<br/><br/> Based on the film "Signals for survival" by Niko Tinbergen and Hugh Falkus, commissioned by the British Broadcasting Corporation. 
<br/><br/>Bibliography: p. 80. 
<br/><br/><label>ISBN: </label>0198573499 
<br/><br/><label>LCCN: </label>70546425 //r85 
<br/><br/><label>Nat. Bib. No.: </label>B70-26026 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Lesser black-backed gull.<br/>Birds--Behavior.<br/>Animal communication.
<br/><br/><label>LC Class. No.: </label>QL696.L3  / T53 
<br/><br/><label>Dewey Class. No.: </label>598.3/3