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Black duck
7
Blue-winged teal
7
Canvasback
7
Common goldeneye
7
Coot
7
Gadwall
7
Hooded merganser
Lesser scaup
7
Mallard
7
Pintail
7
Redhead
7
Ring-necked duck
7
Ruddy duck
7
Aerial waterfowl censuses
6
American green-winged teal
6
American wigeon
6
Bald eagle
6
Common merganser
6
Lesser snow goose
6
Northern shoveler
6
Avian population monitoring
5
Canada goose
5
Bufflehead
4
American merganser
3
Cormorant
3
Red-breasted merganser
3
Shoveler
3
Wood duck
3
Canada Goose
2
American Wigeon
1
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