I give mine straight cocnut fibers, the straight and the matted. The only other thing they have put in the nest is millet spray twigs and in one aviary, carefresh beeding chunks
They will pack it with anything you give them but I find that the coco fiber dries out and stays the cleanest.
My other pair are on 4 eggs.... maybe more. I looked a couple of days ago and there were 4, She started incubating heavy yesterday. First time to cage breed. The pair are in a
30"w x 18" D x 60" H flight cage. No live food. This is the pair that bred last year for me. They had 6 offspring last year in the Sun room aviary.