i've found that when one of my girls is in the nesting box trying to lay and egg that my cockerel and one of the pullets will start doing the egg song as encouragement. sometimes the other hens will start in after a minute of hearing this. depending on the girl, she may do the egg song shortly after getting out of the box.
only one of my pullets so far have i noticed does not do an egg song at all when she's just laid an egg or others are singing. but she clucks up a storm when she hears/sees me go to the coop.
only one of my pullets so far have i noticed does not do an egg song at all when she's just laid an egg or others are singing. but she clucks up a storm when she hears/sees me go to the coop.