broody raising chicks

Hi all, I was wondering when our hen will start laying again after successfully rearing some fertilised eggs. The chicks are 4 weeks old and growing well but the mother hen seems very  fixated on them and doesn't seem interested in laying for us! When will she back into her stride?

Mike

As magicaltoad said she will lose interest in them when they are between 5 and 10 weeks old then she may go into a moult or may go straight back into laying