Irwin, D E <br/><br/>
Song variation in an avian ring species.  [electronic resource] 

 -  Evolution; international journal of organic evolution  Jun 2000 
 - 998-1010 p.  digital 
<br/><br/> Publication Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.; Research Support, U.S. Gov't, P.H.S. 
<br/><br/><label>ISSN: </label>0014-3820 
<br/><br/><label>Standard No.: </label>10.1111/j.0014-3820.2000.tb00099.x  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Animals<br/>Birds--physiology<br/>Ecology<br/>Reproduction<br/>Selection, Genetic<br/>Sexual Behavior, Animal<br/>Vocalization, Animal