Winter Trend Data - Atlantic Flyway 
Weather conditions during the survey period in 1957 were 
generally favorable and it is believed that the data are reasonably 
comparable to previous years. 
Percent Change in Atlantic Flyway (Continental) Population index 
Figures for Ducks, Geese, Brant, Swan, and Coot from January 1956 
to January 1957 (Comparable Coverage). 
Area Ducks Geese Brant. Swan Coot Total 
aE 
Canada 58 -13 -56 
Atlantic Flyway 
States -21 -27 =] +4 = 20 a2) 
Total wae #27 ~l +4 -20 =22 
4 Newfoundland, Quebec and the Maritimes 
Species Composition ~ Atlantic Flyway (Continental) 1956 and 1957. 
(‘Comparable Coverage) 

Percent of Birds Identified Percent 
Species 1956 1957 Change 
Scaup 17.0 LG z -~ 26.6 
Coot : LS 7 16.3 ~ 20.4 
Canada Goose 10.6 9.8 - 28.5 
Pintail 9.4 5.8 ~ 52.6 
Black Duck 9.2 11.6 323 
Mallard Met 9.7 - 2.8 
Canvasback 4.7 4.8 ~ 21.8 
Scoter and Fider 55 2.4 - 47.8 
American Brant 3.4 4.3 Soop bee 
Ringneck 32.5 2.6 ~ 39.8 
Redhead 3.3 2.4 - 42.6 
Baldpate Sat 2.8 - 30.4 

100 
Continued -=+- 
