The Javan Mynah bird (also spelt "Myna") is the southeast Asian equivalent of the Common or Indian Mynah.
As both expand their range, they overlap in parts of India and Southeast Asia.
Instead of the Common Mynah's brown body plumage, the Javan Mynah has grey and it doesn't have the yellow bare skin around the eye.
The Javan Mynah is also called the White-vented Mynah, a feature distinguishing it from the similar Jungle Mynah.
(Above right is a juvenile.)