Narrow Search
Aerial waterfowl censuses
8
American wigeon
8
Avian population monitoring
Black duck
8
Coot
8
Lesser scaup
8
Mallard
8
Pintail
8
Bald eagle
7
Blue-winged teal
7
Canvasback
7
Common goldeneye
7
Gadwall
7
Redhead
7
Ring-necked duck
7
Canada goose
6
Ruddy duck
6
American merganser
5
Hooded merganser
5
Lesser snow goose
5
Shoveler
5
American green-winged teal
4
Common merganser
4
Northern shoveler
4
Blue goose
3
Bufflehead
3
Green-winged teal
3
Canada Goose
2
Cormorant
2
Red-breasted merganser
2
see all ...