An addendum to Wallace's report.  I walked back from the Maintenance Yard to the Nature Center the "long route" and, birding there and in the woods around the Nature Center had the following additions:
 
Veery - big fallout today - c. 10 in the woods back from the Yard and 5 more in the Nature Center area.  I've never seen so many in such a short space of time.
Hermit Thrush - 2 (1 in woods, 1 nr Nature Center)
Swainson's Thrush - 2
Nashville Warbler
Magnolia Warbler - both above heard singing in walk back from woods
Ovenbird - quite amazing numbers of this species today, I was flushing one or more birds every 10-15 yards when walking in the woods.  Probably saw/heard 40 today in total.  
N Waterthrush - heard singing in vicinity of creek just before turn to Beach Drive - yes, more like La Waterthrush territory

Non avian note - c.100 American Toad mating in rain pools in the horse exercise area near the stables. 
 
The numbers of Veery and Ovenbird today were really impressive.
 
Good birding
 
Clive Harris
Cabin John, MD

--- On Thu, 5/7/09, Wallace Kornack <> wrote:


From: Wallace Kornack <>
Subject: [MDOSPREY] Rock Creek Park, Thursday, 5/7
To: 
Date: Thursday, May 7, 2009, 9:09 AM


Another cloudy morning at Rock Creek Park....  Twelve warblers were seen or heard.  All birds seen or heard are listed by location as follows:

----Ridge and Equitation Field