The storms last night brought in some nice birds (and lots 
of birders!) this morning to the northwest D.C. portion of 
Rock Creek Park.  I started at the Maintenance Yard (there 
was early fog on the ridge) and finished at the Nature 
Center and dog run.

I personally saw the following 10 warbler species, in 
observation order: COMMON YELLOWTHROAT (1 male), PRAIRIE 
WARBLER (1 male), YELLOW-RUMPED WARBLER (many), 
BLACK-THROATED GREEN WARBLER, BLACK-AND-WHITE WARBLER, 
BLUE-WINGED WARBLER (a pair giving good views for lots of 
birders; there may have been more), PALM WARBLER, AMERICAN 
REDSTART (2 males), BLACKPOLL WARBLER, and BLACK-THROATED 
BLUE WARBLER (1 male singing).  Other warblers reported but 
not observed by me included Northern Parula and Hooded 
Warbler.

Other (FOY for me) migrants: YELLOW-BILLED CUCKOO, GRAY 
CATBIRD, INDIGO BUNTING, RUBY-THROATED HUMMINGBIRD, 
ROSE-BREASTED GROSBEAK, RED-EYED VIREO, and BALTIMORE 
ORIOLE.  Others reported Yellow-throated Vireo and Eastern 
Kingbird.

Other notable species for the day: SCARLET TANAGER, 
BLUE-HEADED VIREO, COMMON LOON (flyover), SWAMP SPARROW, 
HAIRY WOODPECKER, HERMIT THRUSH, COOPER'S HAWK, OSPREY, and 
RUBY-CROWNED KINGLET.

Here's my full eBird report.  Thanks to all the other 
birders for sharing their expertise and observations!

D

Location:     Rock Creek Park
Observation date:     4/28/07
Time: 06h15-10h35

Notes:  Somewhat cool temperature with weather varying back 
and forth between mostly cloudy and calm to partly cloudy 
with light breeze. Good day for birding after yesterday's 
storms.  Lots of warblers, plus plenty of other new 
migrants.  There may have been more cuckoos and 
Blue-wingeds.  May have heard Yellow-throated Vireo.  Many 
other birders about, with reports that included Eastern 
Kingbird, Northern Parula, and Hooded Warbler.  Saw one 
robin building a nest, and one cardinal tending at least 1 
egg.  Also saw 5 White-tailed Deer, 1 Red Fox, and 2 
chipmunks.

Number of species:     57

Common Loon     7
Osprey     1
Cooper's Hawk     1
Red-shouldered Hawk     1
Mourning Dove     4
Yellow-billed Cuckoo     2
Chimney Swift     3
Ruby-throated Hummingbird     1
Red-bellied Woodpecker     5
Downy Woodpecker     5
Hairy Woodpecker     2
Northern Flicker     2
Eastern Phoebe     1
Blue-headed Vireo     3
Red-eyed Vireo     2
Blue Jay     100
American Crow     3
crow sp.     3
Carolina Chickadee     3
Tufted Titmouse     5
White-breasted Nuthatch     3
House Wren     3
Ruby-crowned Kinglet     1
Blue-gray Gnatcatcher     10
Eastern Bluebird     2
Hermit Thrush     1
Wood Thrush     5
American Robin     30
Gray Catbird     4
European Starling     2
Blue-winged Warbler     2
Black-throated Blue Warbler     1
Yellow-rumped Warbler     25
Black-throated Green Warbler     7
Prairie Warbler     1
Palm Warbler     2
Blackpoll Warbler     1
Black-and-white Warbler     3
American Redstart     2
Ovenbird     7
Common Yellowthroat     1
Scarlet Tanager     1
Eastern Towhee     10
Chipping Sparrow     20
Field Sparrow     2
Song Sparrow     11
Swamp Sparrow     1
White-throated Sparrow     50
Northern Cardinal     5
Rose-breasted Grosbeak     1
Indigo Bunting     2
Common Grackle     1
Brown-headed Cowbird     5
Baltimore Oriole     2
House Finch     2
American Goldfinch     25
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