The Javan Pond Heron, นกยางกรอกพันธุ์ชวา, is found throughout Southeast Asia. It is very similar to the Chinese Pond Heron and the Indian Pond Heron, all of which are virtually indistinguishable from one species to the next when in non-breeding plumage as all of these birds are. (Hopefully, these are all the Javan species since the other two species are pretty much restricted to separate ranges.)