first, dont have him too close to the keets. He may be harboring an unknown illness or he may have feather mites.
Am I to understand that you already have the bird?
I can look on the 911 parrot alert yahoo group to see if one was lost recently. you may want to run an ad in the local paper, some do it for lost pets for free.
email me at
foundinrolls@netscape.net with as much info as you have. The name of the school for example. Color patterns, etc.
Once I have that, I'll see what I can find out
Bill