There's two different walkthrough aviaries, Greater Sunda Islands and Wallace/Sahul.
As the name suggest, Greater Sunda Islands displays birds native to western Indonesia (Sumatra, Kalimantan, Java, Bali, and surrounding small islands). Wallacea/Sahul (Which include a smaller walkthrough aviary that have a parrot interactions booth) particularly display birds native to eastern Indonesia (Sulawesi, Maluku Islands, Lesser Sunda Islands, and Papua) and some from Australia, as well as some assorted mix of other exotic birds, but well-known, that thematicly aren't supposed to be there.
@Rizz Carlton Yes, the Bird Park is essentially two huge walk-through aviaries and of course many smaller satellite aviaries within those two major structures. I had an enjoyable day at Taman Mini Indonesia Indah, but it was also the last zoo day of the entire trip, I became extremely ill, and it was tough to walk around in the baking heat. I think I appreciate this Bird Park more in hindsight, as at the time I was struggling to get through the day. @twilighter and I visited SEVEN bird parks in Southeast Asia during our 3 week trip.
Interesting that they have a Sahul aviary (albeit grouped with Wallacea) - Sahul is a biogeographic region that I first heard the name of quite recently, despite being familiar with the names Wallacea and Sunda for much longer.
