My Standard Frizzle Cochin has sat on two eggs and today is day 21. Only one was fertile i suppose because i do not hear chirpping, and i never candled the eggs. One did hatch about 1 hour ago right under her. it seems flamboyant and healthy. HOW long do i leave the other egg? HOW long does the new chick ctay under her? when will it need to eat and drink, day 3?