Peanut,
I didn't go check out the bird park last weekend cos the skies didn't look very good. But zoo was really packed on Sat, the queue for parking was almost 2 bus stops away from the zoo entrance after the main carpark was full due to reduced capacity from carpark upgrading. I see lots of folks coming via public buses. Guess the new show must be good, but since it starts at 12.30pm, we gave it a miss cos the crowd will be bad by then.
Science Center, go for the pixar exhibit alone if you just want to see that. Though nothing much for a toddler to do at the exhibit, J did enjoy watching the old Pixar short films. I think she entertain other visitors with her clapping and chuckles. Another feature she liked was the zoetrope, it shows stop animation when it slows down the spinning speed, and she love it. Beware there are strobe lights for the zoetrope, not advisable for people with heart problems imo. I say skip the main science center itself cos the exhibits are still as old as it is over the years, and I think I caught a sinus bug while I was inside there. Otherwise the water park outside should be fun, but the weather was poor to play outdoors.