For what I could find on the Internet, they get VERY noisy in mating season, all at once. They'll drive an owner out of home or drive an owner to relocate them and install sound-proofing. Males will get aggressive and females will just disappear with their eggs. You need more details though.

I did find a book that looked as though it might be helpful. Perhaps you can acquire it and borrow a copy through ILL (Inter-Library-Loan):
www.amazon.com health&camp=14573&creative=327641&link Code=as1&creativeASIN=0764116959&adid=0WQS1G0BDW0T4CENX756&

I'm guessing 3-5 weeks for incubation, which is an ignorant guess. It's somewhere in there, probably depending on heat and humidity in the aviary.

 I really don't know i think from about 2-4 weeks, check with a bird book or a vet.