On the way home from work this afternoon, I stopped at the parking area next 
to the tracks on Marriottsville Rd. at the Patapsco River. Walking west from 
here using the trail near the tracks I walked as far as the bridge and 
tunnel one mile to the west. I had the following list of species, including 
my first Yellow-throated Vireos of the season.

Location:     Patapsco Valley SP - Marriottsville
Observation date:     4/30/08
Number of species:     30

Black Vulture     2
Turkey Vulture     7
Chimney Swift     2
Belted Kingfisher     1
Red-bellied Woodpecker     3
Downy Woodpecker     2
Northern Flicker (Yellow-shafted)     1
Pileated Woodpecker     1
Eastern Phoebe     1
Yellow-throated Vireo     2
Blue Jay     2
American Crow     6
Carolina Chickadee     8
Tufted Titmouse     4
White-breasted Nuthatch     2
Carolina Wren     3
Ruby-crowned Kinglet     1
Blue-gray Gnatcatcher     14
Eastern Bluebird     4
American Robin     1
Gray Catbird     1
Northern Parula     9
Yellow-throated Warbler (albilora)     1
Black-and-white Warbler     3
Ovenbird     1
Scarlet Tanager     1
White-throated Sparrow     2
Northern Cardinal     7
Brown-headed Cowbird     2
American Goldfinch     7

Ed Boyd
Westminster, MD