When I got close to this cage, feeding another cage, this weaning age chick started crying, FEED ME! Very unusual to beg at this stage, so I offered it food. The second chick initially wanted no part of it.
But then the next day it started crying ME TOO!
The disadvantage of hand feeding at weaning age is that it prolongs the time several weeks till they wean. Only chicks that were fed before the fear refusal stage will open wide. To transition to self feeding you will need to teach them to nibble.