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White, D. H., M. T. Finley and J. F. Ferrell. 1978. Histopathic effects of 



dietary cadmium on kidneys and testes of Mallard ducks. J. Toxicol. Envi- 

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1977 



Barash, D. P. 1977. Sociobiology of rape in Mallards ( Anas platyrhynchos ) : 

 responses of the mated male. Science 197: 788-789. 



Barber, J. 1977. Mallard diving for small fish. Brit. Birds 70: 164. 



Berkhoudt, H. 1977. Taste buds in the bill of the Mallard ( Anas platyrhynchos ) 

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Cabot, D. 1977. Movements and migration of the Mallard in Ireland. Irish 

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Calverley, B. K. and D. A. Boag. 1977. Reproductive potentials in parkland- 

 and arctic-nesting populations of Mallards and Pintails (Anatidae). Can. 

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Dahlin, J. 1977. Mallard/merganser pair bond. Passenger Pigeon 39: 300. 



Danell, K. and K. Sjoberg. 1977. Seasonal emergence of chironomids in rela- 

 tion to egg- laying and hatching of ducks in a restored lake (northern 

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Gilmer, D. S. , R. E. Kirby, I. J. Ball and J. H. Reichmann. 1977. Post- 

 breeding activities of Mallards and Wood Ducks in northcentral Minnesota. 

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Hubbard, J. P. 1977. The biological and taxonomic status of the Mexican Duck. 

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Johnson, D. H. and A. B. Sargeant . 1977. Impact of red fox predation on the 



sex ratio of prairie Mallards. U.S. Fish & Wildl. Serv., Wildl. Res. Rept . 

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Martin, F. M. and S. M. Carney. 1977. Population ecology of the Mallard: IV: 

 a review of duck hunting regulations, activity and success, with special 

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Matthews, G. V. T. and W. A. Cook. 1977. The role of landscape features in 

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