We imagine that this was once a worthwhile destination, but in its current very dilapidated state, it is really not to be recommended.
The park used to also host a Beatles Museum (the band not the critters). That museum was moved to Sanur on Bali a few years ago and it is a shame something similar wasn't done with this park.
What birds remain would really be better off transferred to a better facility as this really feels like it is in its dying days. Not recommended.