1946 

 Price, H. F. 1946. Mallard nesting in tree cavity. Auk 63: 441. 



1944 



Collins, J. A. 1944. Coot attacks young ducks. Auk 61: 299. 



Harrison, J. 1944. The races of Mallards. Bull. Brit. Ornithol . Club 64: 

 58-60. 



Stoudt, J. H. 1944. Food preferences of Mallards on the Chippewa National 

 Forest, Minnesota. J. Wildl. Manage. 8: 100-102. 



1943 



Munro, J. A. 1943. Studies of waterfowl in British Columbia. Mallard. Can. 

 J. Res. 21: 223-260. 



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

 Auk 60: 438-439. 



1941 



Girard, G. L. 1941. The Mallard: its management in western Montana. J. Wildl. 

 Manage. 5: 223-259. 



1939 



Benson, D. 1939. Survival studies of Mallards liberated in New York State. 

 Trans. N. Am. Wildl. Conf. 4: 411-415. 



1937 



Lloyd, B. 1937. On the behaviour of male Mallards with broods. Brit. Birds 

 30: 334-336. 



1936 



Munro, J. A. 1936. Food of the Common Mallard in the Lower Fraser Valley, 

 British Columbia. Condor 38: 109-111. 



Christof ferson, K. 1936. Common Black Duck, Red-legged Black Duck and Mallard 

 sex ratios. Bird-Banding 6: 138. 



1934 



Errington, P. L. 1934. Second broods in the Mallard Duck. Auk 51: 78-80. 



1932 

 Knappen, P. 1932. Number of feathers on a duck. Auk 49: 461. 



200 



