I saw Wallace's posting from Rock Creek Park in DC this morning that a  
Hooded Warbler was found in the ravine behind the Maintenance Yard.   
That would have been a Life bird for me, so I headed up there at  
1:15pm to see if there was any chance of refinding it.  After about 35  
minutes, one of the tractors in the Yard was started up and backfired  
in an extremely loud manner.  House wrens scattered from the ravine  
along with a flash of yellow - the Hooded Warbler.

So, many thanks to the National Park Service and a backfiring backhoe  
for giving me fantastic looks at a new life bird.  I got one good  
photo:  http://www.flickr.com/photos/sherseydc/4993946504/

I also saw one Common Redstart, 4 Common Yellowthroats and a Red- 
shouldered Hawk that buzzed me minutes after I arrived.

Cheers all,
Steve Hersey
Washington, DC