I walked the Capital Crescent Trail north of Fletcher's Boat House  
this morning in search of the Yellow-throated Warbler--and was  
successful.  I heard one and saw two just north of the 8 mile Post.   
Goeff Goff reported two more along a trail close to the river in the  
same vicinity.  In addition there were more than five Parulas, a  
single Yellow-rumped Warbler, Ruby-crowned Kinglets and Blue-gray  
Gnatcatchers.

Later in the morning I visited Riley's Lock and only heard the  
persistent song of the Yellow-throated Warbler.  Also I saw several  
Parula, many Yellow-rumped Warblers, and a Palm Warbler (yellow).

Have Fun Birding!

Wallace Kornack
Washington DC