Sedwitz, W. 1958. Six years (1947-1952) nesting of Gadwall ( Anas strepera ) on 

 Jones Beach, Long Island, N.Y. Proc. Linn. Soc. N.Y. 66-70: 71-76. 



1957 



Beter, R. A. 1957. A comparative winter food habit study of dabbling ducks 

 from the brackish Lake Borgne Marsh of St. Bernard Parish and the fresh 

 marsh of Pass A Loutre (Miss. Delta), Plaquemines Parish, Louisiana. 

 M.S. thesis, La. St. Univ. /Baton Rouge, LA. 



Gates, J. M. 1957. Autumn food habits of the Gadwall in Utah. Proc. Utah 

 Acad. Sci. Arts, & Lett. 34: 69-71. 



Treous, V. D. 1957. [Seasonal movements and migrations of Anas strepera and 

 A. clypeata as revealed by ringing methods.] Trudy Biuro Kol'tsev 9: 

 T62-208. [In Russian.] 



1952 



Lebret, T. 1952. Pre-moult migration of a female Gadwall, Anas strepera L., 

 and two female Wigeon , Anas penelope L. Ardea 40: 75-76. 



1950 



Springer, P. F. and R. E. Stewart. 1950. Gadwall nesting in Maryland. Auk 

 67: 234-235. 



1949 



Jensen, G. H. 1949. Migration of the Gadwall. Pp. 9-10 in Migration of some 

 North American waterfowl. U.S. Fish & Wildl. Serv., Spec. Sci. Rept . — 

 Wildl. No. 1. 48 pp. 



1948 



Sedwitz, W., I. Alperin and M. Jacobson. 1948. Gadwall breeding on Long Is- 

 land, New York. Auk 65: 610-612. 



1946 



Griffith, R. E. 1946. Nesting of Gadwall and Shoveler on the Middle Atlantic 

 coast. Auk 63: 436-438. 



1944 



Glegg, W. E. 1944. Gadwall diving. Brit. Birds 38: 38. 



1932 



Schimmelpenninck van der Oije, F. A. L. C. 1932. Second Dutch season of hiber- 

 nating Gadwall-pair ( Anas strepera L.). Ardea 21: 119. 



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