Wright, B. S. 1948. Black Ducks in the Maritime Provinces and Canada. Proc. 

 N.E. Game Conf . 1948: 72. 



1947 



Bailey, A. M. 1947. Black and Mottled ducks in Colorado. Condor 49: 209. 



Trautman, M. E. 1947. Courtship behavior of the Black Duck. Wilson Bull. 59: 

 26-35. 



Wright, B. S. 1947. The Black Duck in eastern Canada, a study of the breeding 

 ecology. M.S. thesis, Univ. Wisconsin/Madison, WI. 



1946 



Addy, C. E. 1946. Food habits of the Black Duck on the Essex County salt 

 marshes. Bull. Mass. Audubon Soc. 30: 3-10. 



Griscom, L. 1946. The Black Duck — a tribute and a plea. Bull. Mass. Audubon 

 Soc. 29: 305-307. 



Hagar, J. A. 1946. Black Duck bandings at the Austin Ornithological Research 

 Station on Cape Cod, Massachusetts. Bird-Banding 17: 97-124, 18: 17-26. 



1945 



Addy, C. E. 1945a. A preliminary report on food habits of the Black Duck in 

 Massachusetts. Mass. Dept . Conserv. Resch. Bull. 6. iii and 11 pp. 



. 1945b. Great Black-backed Gull kills adult Black Duck. Auk 62: 142- 



143. 



1945c. Massachusetts waterfowl survey. Mass. Dept. Conserv., Div. 

 _ Wildl. Resch. & Manage., Resch. Bull. No. 7. 21 pp. 



Gross, A. 0. 1945. The Black Duck nesting on the outer coastal islands of 

 Maine. Auk 62: 620-622. 



1943 



Shortt, T. M. 1943. Correlation of bill and foot coloring with age and sea- 

 son in the Black Duck. Wilson Bull. 55: 3-7. 



Trautman, M. B. 1943. Normal flight of a Black Duck after healing of wing 

 fractures. Wilson Bull. 55: 126. 



Wing, L. 1943. Relative distribution of Mallard and Black Duck in winter. 

 Auk 60: 438-439. 



1940 



Kutz, H. L. 1940. The diving ability of the Black Duck. J. Wildl. Manage, 

 4: 19-20. 



226 



