A visit to Milford Mill Park (Baltimore County) produced a nice 
collection of warblers (15 species) and many first-of-season ("FOS") 
species for me, such as Veery and Acadian Flycatcher. Best bird was a 
well-seen Blackburnian Warbler. My partial list:

Acadian Flycatcher - 1 FOS
Ruby-crowned Kinglet - 2
Veery - 2 FOS
Wood Thrush - ~5
Blue-winged Warbler - 2 FOS
Nashville Warbler -3 (heard only)
Northern Parula - 3
Chestnut-sided Warbler - 1 FOS
Magnolia Warbler - 1 FOS
Black-throated Blue Warbler - 3
Yellow-rumped Warbler - scads
Black-throated Green Warbler - 4  (heard only)
Blackburnian Warbler - 1 FOS
Black-and-white Warbler - 1  (heard only)
American Redstart - 3
Ovenbird - 2  (Heard only)
Northern Waterthrush - 1 FOS
possible Louisiana Waterthrush
Wilson's Warbler - 1 FOS (heard only)
Common Yellowthroat - 1
Scarlet Tanager - 1
White-throated Sparrow - ~10
Rose-breasted Grosbeak - 1 (heard only
Baltimore Oriole - 1

Steve Sanford
Randallstown MD (Balto Co)
scartanATverizonDOTnet