I have 2 big Parrot fish in with my Os. The past 2 days my Parrots are staying right by my heater at the top of the tank. My temp has not changed and my water checks out fine. Anyone think this is odd? They did get over ich more than 2 weeks ago. All my other fish are carrying on as normal. My Parrots are also eating same as always. Any ideas? Thanks.

Doesn't sound unusual for a parrot. Don't be alarmed, however as always keep a close eye on your fish's behavior.

that is normal.... the warm area is the comfort zone for fishes....
same way people do and stay in a fire place during cold day.

just keep an eye with your water parameters and they will be fine.