Today at around 12:45pm I found a Sedge Wren on the Patuxent Branch 
Trail in Columbia, MD.  The parking lot for this trail is off of 
Guilford Road (west of Gerwig Lane), and the bird was along the utility 
right-of-way that starts at the back-end of the parking lot.  
Specifically, the wren was just beyond a small stream crossing.  Please 
don't trample the grass if you go choose to go looking for this bird.

Photos of today's Sedge Wren (and a Chestnut-sided Warbler) can be seen 
here:
http://www.flickr.com/photos/odephoto/

Cheers,
Steve Collins
Towson, MD