Swaddle, J P <br/><br/>
Starlings can categorize symmetry differences in dot displays.  [electronic resource] 

 -  The American naturalist  Sep 2001 
 - 300-7 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>1537-5323 
<br/><br/><label>Standard No.: </label>10.1086/321323  doi