Table 27 
SPECIES COMPOSITION OF WATERFOWL POPULATIONS IN THE CHESTER RIVER SECTION 



January 
Populations: Seasonal Population Changes in 1958-59 
Average (Percentages) 
Percentages, 
1955-58 Oct.2-10 Nov.3-12 Dec.1-12 Jan.7-13 Mar.3-16 
Whistling Swan 5 + mn 3 6 
Canada Goose 2h 6 39 23 3h 33 
Snow Goose + + + 
Blue Goose + + 
Mallard 15 6 10 Ly 17 18 
Black Duck 23 13 16 22 25 11 
Gadwall + 
Pintail 6 12 7 10 3 10 
Green-winged Teal + 
Blue-winged Teal + + 
American Widgeon 8 61 16 mn 5 9 
Redhead 2 + 1 1 + 
Ring-necked Duck + + + 1 + + 
Canvasback 8 2 lh 6 6 
Scaup 1 + 2 4A bs 3 
Common Goldeneye 
and Bufflehead + + + 2 2 
Oldsquaw + 
scoters 1 2 1 + 
Ruddy Duck cP + 2 + 
Mergansers + + “+ + 
American Coot 3 + 5 2 
Unidentified Ducks 2 + + 
Total Percent 100 - 100 100 100 100 100 
Total Population 200,800 20,100 109,000 208,700 156,800 74,500 
100 
