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Lancaster, Joseph D.
2
Yetter, Aaron P.
2
Askren, R.J.
1
Askren, Ryan J.
1
Beach C.R.
1
Fournier, Auriel M.V.
1
Gilbert, A.D.
1
Hagy, H.M.
1
Hagy, Heath M.
1
Hine, Chris S.
1
Jacques, C.N.
1
Klimas, S.T.
1
Malanchuk, L.J.
1
Malanchuk, Luke J.
1
Osborn, J.M.
1
Ward, Michael P.
1
and Ward, M.P.
1
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Aerial waterfowl censuses
2
Chicago
2
Midway International Airport
Branta canadensis
1
Canada Goose
1
Canada geese
1
Diving Ducks
1
Ducks
1
Gadwall
1
Greater Chicago Metropolitan Area
1
Green-winged Teal
1
Illinois
1
Illinois River Valley
1
Sanctuary
1
Shorebird
1
Shorebirds
1
Wood duck
1
population monitoring
1
waterfowl populations
1
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