This morning I spent several hours on the Wantastiquet Mountain trail (in NH across the Connecticut from Brattleboro). After about 2 hours, enough sunlight finally warmed the west facing slope and birds became active and singing. A Cerulean Warbler finally appeared and gave a few opportunities for photographs, though one could hardly say that he was cooperative.
Cerulean Warbler is rare and threatened, and it has been several years since I have had a good look at one. This was a treat!!