Siegfried, W. R. 1976c. Social organization in Ruddy and Maccoa ducks. Auk 93: 

 560-570. 



Siegfried, W. R. , A. E. Burger and P. J. Caldwell. 1976. Incubation behavior 

 of Ruddy and Maccoa ducks. Condor 78: 512-517. 



White, D. H. and T. E. Kaiser. 1976. Residues of organochlorines and heavy 

 metals in Ruddy Ducks from Delaware River, 1973. Pest. Monit. J. 9: 

 155-156. 



1975 



Featherstone , J. D. 1975. Aspects of nest site selection in three species of 

 ducks. Ph.D. thesis, Univ. Toronto/Toronto, ON. 



Joyner, D. E. 1975. Nest parasitism and brood-related behavior of the Ruddy 

 Duck ( Oxyura jamaicensis rubida ) . Ph.D. thesis, Univ. Nebraska/Lincoln, 

 NE. 



1974 



Dawson, L. R. 1974. Rearing the North American Ruddy Duck. Avicult. Mag. 80: 

 237. 



Martin, R. M. 1974. The North American Ruddy Duck in captivity. Avicult. 

 Mag. 80: 132-135. 



McKnight , D. E. 1974. Dry- land nesting by Redheads and Ruddy Ducks. J. Wildl. 

 Manage. 38: 112-119. 



1973 



Siegfried, W. R. 1973a. Platform-building by male and female Ruddy Ducks. 

 Wildfowl 24: 150-153. 



. 1973b. Post-embryonic development of the Ruddy Duck, Oxyura jamaicen - 

 sis , and some other diving ducks. Internatl. Zoo. Yearbk. 13: 72-87. 



. 1973c. Summer food and feeding of the Ruddy Duck in Manitoba. Can. J. 



Zool. 51: 1293-1297. 



. 1973d. Wing moult of Ruddy Ducks in Manitoba. Bull. Brit. Ornithol. 



Club 93: 98-99. 



1972 



Libby, H. J. 1972. Ruddy Duck brood distribution in relation to marsh habitat 

 M.S. thesis, Univ. Wise ./Madison, WI. 



Siegfried, W. R. 1972. Ruddy Ducks colliding with wires. Wilson Bull. 84: 

 486-487. 



464 



