Saw the Harris's Sparrow in Columbia at about 2PM today, same spot.
 
At Patuxent South Tract (12-1PM, 43 species total):
 
30 Ring-necked Duck
6 Wood Ducks
5 American Black Ducks
2 Pied-billed Grebe
2 Double-crested Cormorants
1 Bald Eagle
2 Ospreys
c.50 Tree Swallows
1 Northern Rough-winged Swallow

6 Pine Warblers
 
Triadelphia (Greenbridge):
 
10 Tundra Swans
7 Hooded Merganser
5 Double-crested Cormorants

Andy Wilson, Frederick