They have cages that average 3 by 3 by 4 feet, with proper nest boxes. They are in a double garage out in the back of my house and have not been moved for two years. I have heaters, coolers, cross ventilation, air purifiers and fluorescent fixtures. They get a complete diet of all the necessary seeds, pellets, fruits, vegetables, vitamins and minerals.
Nobody goes out there except to service the cages once a day.
They are all well-adjusted. I have no idea what to try now. I was told that they are all mature. Your biggest problem is that the types of birds you are housing together are not compatible. With the exception of the nandays and blue crowns, they all inhibit the successful production of one another.