I spent a few hours at the National Arboretum this morning.  The best bird was a beautiful male HOODED WARBLER offering excellent views.  The Yellow-Rumped Warblers were swarming over the place.  The only other warblers were a few heard NORTHERN PARULAs and BLACK AND WHITE WARBLERS, and a common yellowthroat.

Max Wilson
Kensington, Montgomery County, MD
mercretas AT hotmail.com