A few additions to today's warbler count at Rock Creek Park, all seen:  

Blue-winged - maint. yard
Black-Throated Green - maint. yard
Magnolia - maint. yard
Prairie - maint. yard
Nashville - trail behind nature center
Canada - nature center parking lot median

Also seen:  Great Crested Flycatcher, Eastern Bluebird, and many Baltimore 
Orioles.

Lorie Leavy
Washington DC