These small herons are occasionally seen along the margins of lakes around here in Maryland. They are usually quite shy and fly away as soon as they spot someone approaching. This particular bird, however, which I photographed last August, was an exception. It allowed me to come quite close to it.
While I was photographing it I thought I saw it regurgitate something. It then re-swallowed the thing, which may have been a frog. Is this something they normally do?
If I am not mistaken it's a green-backed heron (Butorides striatus).