I'm wondering about this question for along time, and I've never find the answer on the internet.
I would like to know in which age African Greys and Amazons pairs would stop breeding or the females stop layying eggs ?
I hope that I could find the answer here ASAP
That is more commonly an issue of health of the Parrots and the conditions they are keep. In addition, the really good Breeders have halted providing 'insider' information as it has only lead to an expansions of uncaring individuals that are providing poorly cared for babies, un-weened to new owners who are unprepared to care for those chicks.
If you're plan is to get an older pair of Parrots and start breeding and you have come across a couple pairs for sale. Stop and ask yourself just how ready you really are and target getting insight into doing this process the healthy, correct way.
See the Breeder Forum and read the many Threads that provide insight into doing is correctly. You should also get a feeling for just how much work is involved.