Table 4 
SEASONAL CHANGES IN SPECIES COMPOSITION OF WATERFOWL POPULATIONS IN THE UPPER CHESAPEAKE REGION 



(Percentages) 
October November December January March 
2-10, 3-12, 1-12, 7-13, 3-16, 
1958 1958 1958 1959 1959 
Whistling Swen fe) + 5 \ 5 
Canada Goose il 27 22 23 21 
Brant 0 + + + 1 
Snow Goore 0 + + + + 
Mallard i 5 7 ? h 
Black Duck 18 12 16 1? 7 
Geadwall a) + + + + 
Pintail 5 b 5 2 2 
Green-winged Teal 2 1 + o + 
Hiua-winged Teal 1 + + a) + 
Shoveler 0 0 + 0 + 
. American Widgeon 58 18 5 3 k 
Wood Duck + + + 0 + 
Redhead 0 1 3 § 12 
Ring-necked Dusk fs) + + + 1 
Canvasback 0 ? 15 16 16 
Scanup (Greater & Lesaer) 0 2 7 10 1h 
Common Goldeneye 
& Bufflehsed 0 1 a h 
Raddy Duck + 1h 8 h é 
Oldeqnaw Oo + + + + 
Scoters (3 sp.) 1 + + + + 
Mergansers (3 sp.) 0 + + + + 
Amarican Coot + 5 3 + 1 
Total Parcent 100 166 1090 100 100 
fotel Populations 71,000 438 ,500 707,300 651,500 187,500 

77 
