On the way up to Noland's Ferry this morning, I made a quick stop at the 
Monocacy Aqueduct area.  As I was leaving, I stopped near the railroad 
crossing to look through some sparrows (all white-throats).  To my 
surprise, a Common Raven flew by below tree level, giving me a nice croak 
in addition to good looks.   

John Hubbell
Washington DC