Least Bittern
Two least bittern pictures from 5/5 taken on the Harlem Valley Rail Trail–Sharon Station section submitted by Jane Rossman.
Described by the Cornell Lab of Ornithology as “A tiny heron, furtive and surpassingly well camouflaged, the Least Bittern is one of the most difficult North American marsh birds to spot”. More information can be found here: http://www.allaboutbirds.org/guide/Least_Bittern/id