
Species Composition - Pacific Flyway, 1956 and 1957 (Comparable 
Coverage 
Percent of Birds Identified Percent 
Species ~ 1956 #1957, Change 
Pintail 30.4 30.0 - 14.5 
Mallard 20.1 22.0 - 4.7 
Baldpate 15.8 10.1 - 44.5 
Coot | 9.5 11.7 + 6.2 
Snow Goose 4.9 4.9 - 14,4 
Green-winged Teal 2.9 Z.7 - 19.1 
Shoveler 2.9 z.0 - 38.4 
White-fronted Goose 2.4 1,3 - 53.0 
Cackling Goose Bel 1,6 - 36.0 
Canada Goose yd 2.5 + 12.7 
Scaup 1.9 2:5 + 13.8 
Black Brant 1.3 1.9 + 27.6 
Ruddy Duck 9 Lise + 15.8 
Canvasback .7 2.2 +166,.2 
Whistling Swan .6 .6 - 7.2 
Scoter and Hider 5 1.2 +118.8 
Goldeneye es ~6 + 67.2 
Redhead ato. 1 - 82.5 
Merganser orks 3 + 2.5 
Gadwall oe .é - 29.7 
Bufflehead 1 .2 + 0.8 
Ross' Goose ol ol - 
Ringneck Tr. i Ba + 
Wood Duck | Tr. Tr. - 
Blue-winged Teal Tr. 22 = 
Old Squaw LE; Ere - 
_ Trumpeter Swan Tr. Irs + 20.6 
Emperor Goose | He = 
EEE OEEOE—E—E—E—TEeeeeee EEE 
Total 100.0. 100.0 - 12.4 

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