Dear Wilson,
Why not try Punti forest in Johor Bharu, Malaysia? The birds there are more diverse and attractive.
http://www.malaysiabirding.org/section.php?sid=60&pb=Tier
If you have two days, there should be enough time to visit the forest. It is quite close to Singapore. I have never been there but really want to go (combining the trip with the new legoland).
Good luck,
Cheers
Captain