Looks a little bit like a morning dove. Yeah those herons can do a number. My old neighbor had the old inside of a washing machine that he kept minnows in the lake in. the holes allow water to flow but keeps the bait in. One morning around 6:00 AM I looked out the window and saw a heron just going to town on those literal fish in a barrel. The next time I saw the guy I told him what had happened and asked him if the bird left him any. He said yeah, 1 out of 12!