My light sussex hen has been rearing 4 chicks that I bought by post. She is a great mum. They have a little hutch in the stable which I opened when they were a few days old and put a barrier round so that mum could stretch her legs but the chicks couldn't get out.
Well they are now 2 weeks old and have been getting out of their little pen for more than a week but are still confined to the stable. Mum walks round the stable with them watching whatever they do.
When I bring food she like to 'vet' it first. She gets upset if I put it directly into the bowl, prefering instead to take it from my hands and then giving it to the chicks when she has inspected it.
Awww, isn't mother nature wonderful.