I checked out the Susquehanna on saturday from both the Lapidum Rd side 
and the Port Deposit side.  Try as I might, I couldn't find any Little 
or Black-headed Gulls among the Bonies.

200+ Bonaparte's Gulls
1000+ Tree Swallows
1 Common Loon - complete alternate plumage- beauty
2 Wood Ducks
10 Lesser Scaup
1 DC Cormorant

Cheers,
Steve Collins
Towson, MD
http://odephoto.com