With the sun rising above the trees I thought I'd try my 
luck first at the ridge, but it was pretty quiet.  The 
action was back at the maintenance yard, stables, and nature 
center, featuring CERULEAN and BLACKBURNIAN WARBLER.  Full 
warbler list for me: YELLOW-RUMPED (still lots all over the 
place), OVENBIRD (heard only), BLACK-AND-WHITE (several in 
various places), NORTHERN PARULA (FOY; yard, stables, 
center), CERULEAN WARBLER (heard only, at the stables, where 
I had one 2 years ago; I got an OK recording, and someone 
else reported hearing the bird there as well), 
BLACK-THROATED GREEN (heard only; yard), BLACK-THROATED BLUE 
(heard only; yard), and BLACKBURNIAN (great views of a male 
in the trees over the parking lot between the stable and the 
center, seen by myself and several others).  Others reported 
possible Cape May (heard only), American Redstart (female), 
and Nashville.

Other "good" migrants: SCARLET TANAGER (several males in 
various places, all singing), GREAT CRESTED FLYCATCHER (FOY 
for me; seen and heard at the ridge), BALTIMORE ORIOLE 
(males singing), RED-EYED VIREO (yard), and ROSE-BREASTED 
GROSBEAK (great looks at 3 males and 1 female at the yard). 
Others reported Yellow-billed Cuckoo and a possible Indigo 
Bunting as well.

Other nice birds included COMMON LOON (flyover), 
RED-SHOULDERED HAWK, HOUSE WREN, DARK-EYED JUNCO (hadn't 
seen any for more than a week; these were at the nature 
center), and SHARP-SHINNED HAWK.

Here's my complete eBird report:

Location:     Rock Creek Park
Observation date:     4/30/07
Time:	06h15-09h35

Notes:  Mostly clear, cool, and calm at the start, but 
clouds rolled in and there was a brief shower before it 
turned sunny again.  FOY: Great Crested Flycatcher (heard 
first, then good look), Northern Parula (heard and seen), 
Cerulean Warbler (heard only; got an OK recording), 
Blackburnian Warbler (excellent looks by myself and others 
at a male in the sunshine).  Others reported possible Cape 
May Warbler (heard only), American Redstart (female), 
Nashville Warbler, Yellow-billed Cuckoo, and possible Indigo 
Bunting.  A pair of gnatcatchers were tending a nest.  Also 
saw White-tailed Deer, Red Fox, and chipmunk.

Number of species:     46

Common Loon     1
Sharp-shinned Hawk     1
Red-shouldered Hawk     1
Mourning Dove     5
Chimney Swift     1
Red-bellied Woodpecker     6
Downy Woodpecker     3
Northern Flicker     2
Eastern Phoebe     2
Great Crested Flycatcher     1
Red-eyed Vireo     2
Blue Jay     100
American Crow     7
Carolina Chickadee     7
Tufted Titmouse     6
White-breasted Nuthatch     4
House Wren     1
Ruby-crowned Kinglet     5
Blue-gray Gnatcatcher     5
Eastern Bluebird     1
Wood Thrush     4
American Robin     20
Gray Catbird     2
European Starling     1
Northern Parula     3
Black-throated Blue Warbler     1
Yellow-rumped Warbler     25
Black-throated Green Warbler     1
Blackburnian Warbler     1
Cerulean Warbler     1
Black-and-white Warbler     4
Ovenbird     2
Scarlet Tanager     3
Eastern Towhee     10
Chipping Sparrow     3
Field Sparrow     1
Song Sparrow     1
White-throated Sparrow     25
Dark-eyed Junco     2
Northern Cardinal     6
Rose-breasted Grosbeak     4
Common Grackle     1
Brown-headed Cowbird     3
Baltimore Oriole     2
American Goldfinch     10
House Sparrow     20

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

D

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