LITERATURE CITED 



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Albers, P. H. 1977. Effects of oil on aquatic birds. Pp. 61-68 Jji P. L. Fore 

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Aldrich, E. C. 1938. A recent oil pollution and its effect on the water birds 

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Alexander, W. C. and J. D. Hair. 1979. Winter foraging behavior and aggression 

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Allen, J. A. and H. R. Perry. 1980. Breeding chronology of Louisiana Mottled 

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. 1969b. Evidence from salt gland analysis for convergence of migratory 



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 40: 198-207. 



Anderson, D. R. and C. J. Henny. 1972. Population ecology of the Mallard. I. 

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AOU (American Ornithologists' Union) 1957. Checklist of North American birds. 

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AOU Committee on Classification and Nomenclature. 1973. Thirty-second supple- 

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