This afternoon I stopped by Piney Run Park and found 140 Tundra Swans on 
the far end of the lake.  Also present were:

Horned Grebe
Canada Goose
American Wigeon
Mallard
Green-winged Teal
Canvasback
Ring-necked Duck
Scaup sp. (I assume Greater, but they were too distant for me to be sure)
Bufflehead
Hooded Merganser
Common Merganser
Ruddy Duck
and a Bald Eagle

Cheers,
Steve Collins
Towson, MD