I spent a few hours this morning in Beltsville and Patuxent Wildlife Refuge in PG County.  Patuxent had a nice collection of warblers as well as a Summer Tanager.  I was pleased to see Bobolinks as reported earlier this week from Beltsville.

List below.  All bird at Patuxent except where noted.

Wood Duck - 8
Ruddy Duck - 1
Great Blue Heron - 1 Beltsville
Osprey - 2
Red-bellied Woodpecker - 4
Downy Woodpecker - 1
Pileated Woodpecker - 2
Acadian Flycatcher - 2
Eastern Phoebe - 1
Great Crested Flycatcher - 2
Yellow-throated Vireo - 2
Red-eyed Vireo - 3
Blue Jay - 1
American Crow - 2
Fish Crow - 1
Tree Swallow - 12
Carolina Chickadee - 2
Tufted Titmouse - 2
White-breasted Nuthatch - 1
Carolina Wren - 1
House Wren - 1
Blue-gray Gnatcatcher - 4
Eastern Bluebird - 1
Wood Thrush - 6
American Robin - 8
Gray Catbird - 1
Northern Mockingbird - 2
Northern Parula - 4
Yellow Warbler - 1
Black-throated Blue Warbler - 1
Yellow-rumped Warbler - 15
Black-throated Green Warbler - 1
Pine Warbler - 2
Black-and-white Warbler - 1
Worm-eating Warbler - 2
Ovenbird - 10
Common Yellowthroat - 1
Summer Tanager - 1
Scarlet Tanager - 4
Chipping Sparrow - 1
Swamp Sparrow - 3
White-throated Sparrow - 10
Northern Cardinal - 2
Blue Grosbeak- 1
Bobolink - 3  Beltsville
Eastern Meadowlark - 1 Beltsville

John Hubbell
Washington DC