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