It is a method that makes abundant sense to me. Essentially,the baby is given more than enough variety and quantity of weaning foods at all times during the day. Additionally, the baby is encouraged to nibble food from the fingers. Formula feedings are never reduced prematurely nor eliminated before the baby is eating sufficently on its own. This method results in healthy babies of excellent pet quality because both their nutritional and emotional needs were never compromised unnecessarily.
Babies also wean very quickly and with less difficulty than ever before.
A hand-reared bird bought soon after it has been weaned by the breeder will be as responsive and affectionate to its new owner as one for which weaning has yet to be accomplished. Parrots are very adaptable creatures capable of bonding and re-bonding many times during their life. It is nature's way of ensuring survival of their species. They have caused much needless suffering and worse. Formula that is too hot or contains hot spots from microwaving can bum the crop seriously.