
Species Composition - Central Flyway (Continental) 1955 and 1956 
: Comparable Coverage) | | 



| Percent of Birds Identified _ i Percent 
Species 1955 1956 Change 
Mallard 30.2 21.6 - 1.7 
Pintail 27.1 26.0 + 32.0 
Redhead 9.2 12.8 + 92.1 
Coot 8.8 11.0 + 72.5 
Snow Goose 4.4 4.9 + 51.6 
Scaup 4.2 6.3 +107.8 
Blue-winged Teal Bers | 2.6 + 12.8 
Shoveler 2.6 1.4 » 22.2 
Green-winged Teal 2.3 1.4 - 15.3 
Canada Goose led 1.9 + 31.8 
Baldpate 1.7 6.6 $419.1 
Gadwall 1.3 1.2 + 27.4 
White -fronted Goose .7 13 - 45.1 
Merganser “t a, - 1.1 
Blue Goose .6 4 - 2.6 
Canvasback .4 .6 +117.9 
Goldeneye .3 | - 42.2 
Tree Duck 2 oo +118.0. 
Ringneck 1 Tr - 60.7 
Ruddy Duck A at +188.8 
Bufflehead . Pr. Tre - 10.1 
Wood Duck Tr. Tr. - 65.3 
Mottled Duck Tr. . Exe. - 14.9 
Trumpeter Swan | Tr. Tr. - 69.4 
Black Duck ite |: - = 
Whistling Swan Tr. Er. 7 - 
Total 100.0 100.0 : + 39.0 
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