Species Composition - Pacific Flyway - 1958 and 1959 
(Comparable Coverage) 
Percent of Birds Identified Percent 
Species , 1953 1959 Change 
Pintail 31.4 25.9 - 62 
Mallard 21.4 2h.3 ~ 26.9 
Baldpate 12.3 1 2 pf» Deh 
Shoveler 4.2 4.2 f 12.2 
G. W. Teal . 3.5 6.2 f 97.3 
Gadwall 9 1.0 f 30.2 
B. W. Teal <3 5 f 119.9 
Wood Duck Tr, Tt. f 183.3 
Sub-Total 74.0 Tou3 10.7 © 
Diving Ducks 
Scaup 3.4 3.6 f 18.8 
Canvasback L.4 1.0 - 23.4 
Ruddy . 1.3 1.7 ? 51.2 
Goldeneye ot oh # 20.8 
Bufflehéad 03 3 f -16.1 
Redhead 2 5 f 278.2 
Ringneck ai ok f 72.6 
Sub-Total Toa (Am f 22.3 
Misc. Ducks 
Scoter & Eider 8 1.0 f 34.8 
_ Merganser 2 32 f 9.9 
Tree Ducks ee = - 
- 01d Squaw Tr. Tr. f 76.0 
Sub-Total 1.2 Le , 
Geese 
Snow Goose 3.1 3.4 f 22,4 
Cackling Goose 1.9 1.2 - 29.9 
Canada Goose 1.8 ac) - f 28.5 
White-fronted Goose 1.2 1.4 f 27.7 
Ross' Goose ol af - 3.6 
Sub-Total. | Gl Gigk f 11.9 
Whistling Swan ; . 25 Be - 21.5 
Trumpter Swan Tr. Tr. f 49.0 
Black Brant 12 . ai - 45.6 
Coot in 8.0 — 8.9 f 23.6 

11 
