1969 



Hays, H. and H. M. Habermann. 1969. Note on bill color of the Ruddy Duck, 

 Oxyura jamalcensls rublda . Auk 86: 765-766. 



Joyner, D. E. 1969. A survey of the ecology and behavior of the Ruddy Duck 



( Oxyura jamaicensis ) in northern Utah. M.S. thesis, Univ. Utah/Salt Lake 

 City, UT. 



1968 



Campbell, R. W. 1968. Two records of the Ruddy Duck nesting in Vancouver, 

 British Columbia. Can. Field-Nat. 82: 217-219. 



1967 



Johnsgard, P. A. 1967. Observations on the behavior and relationships of the 

 White-backed Duck and the stiff-tailed ducks. Wildfowl Trust Annu. Rept . 

 18: 98-107. 



1964 



Heintzelman, D. S. and C. J. Newberry. 1964. Some waterfowl diving times. 

 Wilson Bull. 76: 291. 



1963 



Cutts, E. 1963. Ruddy Duck nest found near Charleston, South Carolina. Chat 

 27: 53-54. 



Meitzen, T. C. 1963. Additions to the known breeding ranges of several spe- 

 cies in south Texas. Auk 80: 368-369. 



1961 



Hunt, G. S. 1961. Ruddy Ducks in southeastern Michigan in summer. Jack-Pine 

 Warbler 39: 95. 



King, B. 1961. Feral North American Ruddy Ducks in Somerset. Wildfowl Trust 

 Annu. Rept. 12: 167-168. 



1958 



Ferguson-Lees, I. J. 1958. The identification of the White-headed and Ruddy 

 Ducks. Brit. Birds 51: 239-240. 



1953 



Wolf, K. 1953. Grebe-duck nesting parasitism. Auk 70: 84, 



465 



