Hi all --

Quite an active day at Rock Creek Park DC, despite the cool night. Red-eyed Vireos seemed to be everywhere (mostly heard-only) and there was also a BIG push 
of Black-throated Blues. The birds listed are those we personally saw (or in a lot of cases, heard) unless noted otherwise, so I would not be surprised if there are a number of  "addenda" to this list. 

Areas covered from about 7:15 to 10:30 included picnic areas 17/18 ("ridge"), equitation field, nature center, stable, maintenance yard, & Military field.

Birds of interest:

Warblers (19 species):
Black-throated Blue - 15 (all but 2 were males)
Black-throated Green - 3
Black and White - 6
Blackburnian - 2, heard only by us, but others saw one
Bay-breasted - 2, singing high in trees near stable, not sure if anyone saw one -- we didn't!
Blackpoll - 3
Blue-winged - 1, female
Cape May - 1 singing at ridge
Chestnut-sided - 3
Hooded - 1, singing in Maint. Yard, seen by some
Magnolia - 1 at least seen by others
Nashville - 3
Ovenbird - 10
Parula - 6
Redstart - 3
Wilson's - 1
Worm-eating, 2 heard only
Yellow-rumped (Myrtle) - ~30
Common Yellowthroat - 3

Others:
Solitary Sandpiper - 3, flyover
Ruby-throated Hummingbird - 2
Yellow-billed Cuckoo - 2, heard only 
Great Crested Fycatcher - 3
Eastern Pewee - 1, FOY
Eastern Phoebe - 1
Barn Swallow - 3
Red-eyed Vireo - ~45 seen/heard 
Yellow-throated Vireo - 2
Scarlet Tanager - 8
Veery - 1
Swainson's Thrush - 1, FOY
Indigo Bunting - 2
Rose-breasted Grosbeak - 1
Baltimore Oriole - 10
White-throated Sparrow -- only 6 

Gail Mackiernan and Barry Cooper
Colesville, MD