I saw this bird flying through Dhaka, Bangladesh from my apartment. My first thought was little cormorant since I see those fly over relatively often, but then when I zoomed in with my camera I was sure it wasn't. Shape and flight style were both wrong. I noticed that it had slow wing beats, and relatively large wings compared to the body. Was only able to get one picture before it flew behind a neighboring building. My current tentative hypothesis is bittern, maybe cinnamon? I know this probably is not identifiable, but would appreciate any help.