1961 



DeGraff, L. W., D. D. Foley and D. Benson. 1961. Distribution and mortality 

 of Canvasbacks banded in New York. N.Y. Fish Game J. 8: 69-87. 



1960 



Benson, D. , D. D. Foley and L. W. DeGraff. 1960. Canvasback abundance in New 

 York. N.Y. State Fish Game J. 7: 48-59. 



Hochbaum, H. 1960. The brood season/brief care and early desertion are Can- 

 vasback duckling* s lot. Nat. Hist. 69: 54-61. 



1959 



Dzubin, A. 1959. Growth and plumage development of wild-trapped juvenile Can- 

 vasback ( Aythya valisineria ) . J. Wildl. Manage. 23: 279-290. 



Geis, A. D. 1959. Annual and shooting mortality estimates for the Canvasback. 

 J. Wildl. Manage. 23: 253-261. 



Hochbaum, H. 1959. The Canvasback on a prairie marsh. Stackpole Co., Harris- 

 burg, PA., & the Wildl. Manage. Instit., Washington, D.C. xii and 207 pp. 



1958 



Stewart, R. E., A. D. Geis and C. D. Evans. 1958. Distribution of populations 

 and hunting kill of the Canvasback. J. Wildl. Manage. 22: 333-370. 



1948 



Erickson, R. C. 1948a. Life history and ecology of the Canvasback, Nyroca val - 

 isineria (Wilson), in southeastern Oregon. Ph.D. thesis, Iowa St. Coll./ 

 Ames, IA. 324 pp. 



. 1948b. Life history and ecology of the Canvasback, Nyroca valisineria 



(Wilson) in southeastern Oregon. Iowa St. Coll. J. Sci. 23: 30-32. 



1946 



Smith, J. D. 1946. The Canvasback in Minnesota. Auk 63: 73-81. 



1944 



Hochbaum, H. A. 1944a. The Canvasback on a prairie marsh. M.S. thesis, Univ. 

 Wisconsin/Madison, WI. 



. 1944b. The Canvasback on a prairie marsh. Am. Wildl. Inst, xii and 



201 pp. 



268 



