I have few questions. 1st- when there are no roosters arround, hens lay infertile eggs , on an average 1 egg per day or every other day. if these eggs r not removed, do hens sits on these infertile eggs? 2nd- when hens are with roosters, will hens lay fertile eggs everyday on an average or every other day? 3rd- if these fertile eggs r not removed, will the hen continue laying fertile eggs and how will the hen sit on so many eggs to hatch them?