
PACIFIC FLYWAY 
Species Composition - Pacific Flyway (Continental) 1955 and 1956 
(Comparable Coverage) 



Percent of Birds Identified Percent 
Species : 1955. © ~©6©1:956- Change 
Pintail 3) Nar 28.6 N.C. 
Mallard 17.5 17.8 + 10.6 
Baldpate ; 11.8 15.0 + 37.7 
Coot 8.2 9.4 + 23.5 
Shoveler 5.1 4.9 + 2.8 
Green-winged Teal 4.4 4.1 N.C. 
Snow Goose 3.7 4.3 + 29.0 
Scaup 3.5 3.0 - 6.4 
Cackling Goose 2.6 1.8 - 21.2 
White -fronted Goose VANS Z2.1 N.C. 
Black Brant 1.6 1.2 - 18.8 
Canada Goose 1.4 1.8 + 32.7 
Scoter & Eider 1.4 .@9 - 29.1 
Ruddy Duck J 1.2 42.2 
Gadwall 9 .6 - 21.8 
Canvasback 9 .6 - 20.8 
Goldeneye one .5 - 20.6 
Bufflehead pase a2 - 43.6 
Whistling Swan 4 Ris, + 32,8 
Redhead .4 4 + 27.5 
B-w. & Cinn. Teal es . 4 + 80.8 
Merganser as ao + 35.1 
Tree Duck .2 3 + 55.6 
Ringneck rr. 7 Tr: - 14.0 
Ross' Goose Tr. eal + 88.6 
Old Squaw Tr. Tr. - 10.1 
Wood Duck Tr. A - 11.6 
Trumpeter Swan Tr. Tr. - 6.8 
Emperor Goose aa | - 
Total 100.0 100.0 + 9.8 
