I just got chickens yesterday: one mama with four babies and over the night she laid an egg. She has been around roosters up until yesterday, but she doesn't sit on it except for at night. She lays on it when she sleeps at night with her babies which are a month or two old. is it possible that it is fertile? if it is, is it okay that she ignores it during the day? any other info about egglaying would be greatly appreciated.