A few warblers to add to Clive's list, seen/heard by myself 
and/or others: Northern Parula, Blackburnian, Black-throated 
Blue, Black-and-white, Hooded.  There was some question as 
to whether one of the Kentuckys sounded more like Mourning, 
but nothing definitive.  Also, a Common Nighthawk was seen 
at the equitation field.

Here are my personal observations:

Location:     Rock Creek Park
Observation date:     5/17/07
Notes:     Mostly clear/sunny, cool, calm.  May have seen 
female Bay-breasted Warbler (others saw male, and Magnolia, 
Black-throated Blue, and Blackburnian).  A Common Nighthawk 
was seen by a birder at the equitation field.
Number of species:     47

Turkey Vulture     1
Mourning Dove     3
Chimney Swift     3
Red-bellied Woodpecker     5
Downy Woodpecker     3
Northern Flicker     1
Pileated Woodpecker     1
Eastern Wood-Pewee     3
Eastern Phoebe     1
Great Crested Flycatcher     1
Red-eyed Vireo     10
American Crow     2
Barn Swallow     1
Carolina Chickadee     4
Tufted Titmouse     4
White-breasted Nuthatch     3
Carolina Wren     1
House Wren     1
Blue-gray Gnatcatcher     3
Veery     1
Swainson's Thrush     10
Wood Thrush     1
American Robin     20
Gray Catbird     4
European Starling     5
Northern Parula     2
Chestnut-sided Warbler     1
Yellow-rumped Warbler     3
Blackpoll Warbler     4
Black-and-white Warbler     1
American Redstart     2
Ovenbird     4
Kentucky Warbler     1
Common Yellowthroat     1
Hooded Warbler     1
Canada Warbler     1
Scarlet Tanager     1
Eastern Towhee     2
Song Sparrow     2
White-throated Sparrow     1
Northern Cardinal     3
Rose-breasted Grosbeak     3
Common Grackle     1
Brown-headed Cowbird     4
Baltimore Oriole     2
American Goldfinch     5
House Sparrow     20

This report was generated automatically by eBird v2 
(http://www.ebird.org)

-- 
Derek C. Richardson, Laurel, PG County, MD
http://www.astro.umd.edu/~dcr/Archives/Photos/birds.html