Friedmann, Herbert,  1900-1987 <br/><br/>
A further contribution to knowledge of the host relations of the parasitic cowbirds / 
Herbert Friedmann, Lloyd F. Kiff, and Stephen I. Rothstein 
 - Washington  :  Smithsonian Institution Press,  1977 
 - iii, 75 p. ;  26 cm. 
 - Smithsonian contributions to zoology ;  no. 235 .
<br/><br/>Bibliography: p.70-73 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cowbirds<br/>Parasitic birds<br/>Birds--North America