Eco Green Park and Faunaland is somewhat of a different facility. The privately-owned Faunaland purchased some land within the Ancol-owned park, but still under somewhat of a loose joint-ownership if I'm correct.
@Rizz Carlton Interesting. I was with @twilighter and since we were early we went for a half-hour walk through the park and a couple of exhibits (Javan Rusa Deer, Siamang) can be seen before entering the zoo's grounds. It's sort of like Central Park Zoo in New York City, with a small zoo inside a sprawling park.