I have got pair Major Mitchell they are about 2008 and 2009 and someone told me this pair will not breed only if there is much rain and humidity is that true?
I'm no expert but I believe they're not the easiest to breed in captivity. The local bird shop to me had a seemingly lovely MM2 for a while who was was apparently an ex-breeder bird who had been 'retired' after inflicting serious injuries on his two mates, and according to the guy in the shop that's not entirely uncommon with this species. I was really taken with him but with a female cockatoo of a more delicate species already in the house I reluctantly concluded that, as adorable as he was to humans, he wouldn't be a sensible addition to the family.
Intersting articles. Sounds like a species better left to experienced aviculturists. There's a few reasons in there why they're expensive and not real popular as pets.