Thanks for the tip from Andy Guthrie! Might be worth for folks to check places like the Tomhannock, Saratoga Lake etc. in the morning.
From MASS Birds:
Subject: Arctic and Black Terns Pontoosuc Lake,
Date: Sat May 25 2013 16:44 pm
From: miliff AT aol.com
In Pittsfield, Berkshire Co. One adult of each present now in rain and cold among 1000 swallows. Both terns stating near middle of lake.
Good Birding and check those lakes!