Highlights (my favorites) of this morning's walk at Lake Roland, Baltimore 
County:

Mallard (two females with young)
Osprey
Barred Owl
Great Crested Flycatcher
White-eyed Vireo
Blue-headed Vireo 
Veery
Swainson's Thrush
Cedar Waxwing - ~30
Blue-winged Warbler
Northern Parula
Yellow Warbler
Magnolia Warbler
Black-throated Blue Warbler
Yellow-rumped Warbler
BAY-BREASTED WARBLER
Black-and-white Warbler
American Redstart
Ovenbird
Louisiana Waterthrush
   (possible Kentucky Warbler - heard)
Common Yellowthroat
Indigo Bunting
Orchard Oriole

John Dennehy
Baltimore