Dave Larkin and I birded Swan Harbor Park in Harford County today.  The best
birds were heard-only:

 

Least Bittern (2, maybe 3)

Virginia Rail (1)

Marsh Wren (2)

 

We also saw Great Egret (3), Bald Eagle (4), Osprey (2+).

 

This is a very accessible marsh, and it's close to Baltimore.

 

Peter Lev

Towson, MD