BIBLIOGRAPHY 



1980 



Afton, A. D. 1980. Factors affecting incubation rhythms of Northern Shovelers , 

 Condor 82: 132-137. 



Mihelsons, H. 1980. Study of population ecology of ducks by ringing. Acta 

 Ornithol. 17: 45-62. 



1979 



Afton, A. D. 1979a. Incubation temperatures of the Northern Shoveler. Can. 

 J. Zool. 57: 1052-1056. 



. 1979b. Time budget of breeding Northern Shovelers. Wilson Bull. 91: 



42-49. 



Weatherhead, P. J. 1979. Behavioral implications of the defense of a Shoveler 

 brood by Common Eiders. Condor 81: 427. 



1977 



Afton, A. D. 1977. Aspects of reproductive behavior in the Northern Shoveler. 

 M.S. thesis, Univ. Minnesota/Minneapolis, MN. 65 pp. 



Broderson, D., A. G. Canaris and J. R. Bristol. 1977. Parasites of waterfowl 

 from southwest Texas: II. The Shoveler, Anas clypeata . J. Wildl. Dis. 13: 

 435-439. 



Clark, A. 1977. Review of the records of three Palearctic ducks in southern 

 Africa. Bull. Brit. Ornithol. Club 97: 107-114. 



Smith, F. W. 1977. Records of molting in the Pintail ( Anas acuta ) and the 

 Northern Shoveler ( Anas clypeata ) on the Texas Gulf Coast. Southwest. 

 Nat. 21: 558. 



1974 



Poston, J. H. 1974. Home range and breeding biology of the Shoveler. Can. 

 Fish Wildl. Serv. Rept . Ser . No. 25. 49 pp. 



Seymour, N. R. 1974a. Aerial pursuit flights in the Shoveler. Can. J. Zool. 

 52: 1473-1480. 



. 1974b. Site attachment in the Northern Shoveler. Auk 91: 423-427. 



1974c. Territorial behaviour of wild Shovelers at Delta, Manitoba, 

 "Wildfowl 25: 49-55. 



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