Henny, C. J. and N. E. Holgersen. 1974. Range expansion and population in- 

 crease of the Gadwall in eastern North America. Wildfowl 25: 95-101. 



Serie , J. R. 1974. The feeding ecology of breeding Gadwalls ( Anas strepera ) 



on saline wetlands. M.S. thesis, North Dakota St. Univ. /Fargo, ND. 56 pp. 



1973 



Sugden, L. G. 1973. Feeding ecology of Pintail, Gadwall, American Wigeon, and 

 Lesser Scaup ducklings in southern Alberta. Can. Wildl. Serv. Rept . Ser. 

 No. 24. 43 pp. 



1972 



Child, K. N. 1972. A new distributional record for the Gadwall. Can. Field- 

 Nat. 86: 291-292. 



1971 



Batt, B. D. J. 1971. Gadwall duck learns to fly after breaking a wing. Bird- 

 Banding 42: 301-302. 



1970 



Emmons, J. 1970. Gadwalls revisited. Fla . Wildl. 24: 12-15. 



1969 



Oring, L. W. 1969. Summer biology of the Gadwall at Delta, Manitoba. Wilson 

 Bull. 81: 44-54. 



1968 



Oring, L. W. 1968. Growth, moults, and plumages of the Gadwall. Auk 85: 355- 

 380. 



1966 



Borden, R. and H. A. Hochbaum. 1966. Gadwall seeding in New England. Trans. 

 N. Am. Wildl. Conf. 31: 79-88. 



Chabreck, R. H. 1966. Molting Gadwall ( Anas stepera ) in Louisiana. Auk 83: 

 664. 



Duebbert, H. F. 1966. Island nesting of the Gadwall in North Dakota. Wilson 

 Bull. 78: 12-25. 



Oring, L. W. 1966. Breeding biology and molts of the Gadwall, Anas strepera 

 (Linnaeus). Ph.D. thesis, Univ. Okla. /Norman, OK. 



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