Smithsonian Report, 1910. — Duerden. 



Plate 6. 



A Cock Byock or Fancy, a Parti-Color of 

 Black and White. 



Three or four of such plumes, often with more 

 black, occur toward the end of the series of wing 

 quills. Grown by Messrs. Walter Weeks & Son. 

 Sandflats. 



