Bartonek, J. C. and J. J. Hickey. 1969b. Selective feeding by juvenile diving 

 ducks in summer. Auk 86: 443-457. 



Campbell, J. M. 1969. The Canvasback, Common Goldeneye, and Bufflehead in 

 Arctic Alaska. Condor 71: 80. 



Geis, A. D. and W. F. Crissey. 1969. Effect of restrictive hunting regula- 

 tions on Canvasback and Redhead harvest rates and survival. J. Wildl. 

 Manage. 33: 860-866. 



1968 



Kocan, R. M. 1968. The Canvasback Duck ( Aythya valisineria ) ; a new host re- 

 cord for Plasmodium . Bull. Wildl. Dis. Assoc. 4: 86-87. 



Martinson, R. K. and A. S. Hawkins. 1968. Lack of association among duck 

 brood-mates during migration and wintering. Auk 85: 684-686. 



1967 



Timken, R. L. 1967. Canvasback male participating in a Redhead courtship 

 party. Auk 84: 588. 



1965 



Olson, D. 1965. Differential vulnerability of male and female Canvasbacks 

 to hunting. Trans. N. Am. Wildl. Conf. 30: 121-135. 



Stoudt, J. H. 1965. Project report on habitat requirements of the Canvasback 

 during the breeding season. U.S. Fish & Wildl. Serv. Proj. A-8. 6 pp. 



1964 



Longcore, J. R. and G. W. Cornwell. 1964. The consumption of natural foods 



by captive Canvasbacks and Lesser Scaups. J. Wildl. Manage. 28: 527-531. 



Olson, D. P. 1964. A study of Canvasback and Redhead breeding populations, 

 nesting habitats and productivity. Ph.D. thesis, Univ. Minnesota/Minne- 

 apolis, MN. 100 pp. 



1963 



Cornwell, G. W. and A. B. Cowan. 1963. Helminth populations of the Canvas- 

 back ( Aythya valisineria ) and host-parasite-environmental inter-relation- 

 ships. Trans. N. Am. Wildl. & Nat. Resources Conf. 28: 173-199. 



Longcore, J. R. 1963. Consumption of natural foods and effects of starvation 

 on Canvasbacks and Lesser Scaups. M.S. thesis, Univ. Michigan/ Ann Arbor, 

 MI. 



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