I am thinking of putting fertile eggs under my 2 broody hens...for the first time. I am wondering what advice all of you have? Some questions I have: -Whats the best way to mark the fertile eggs so they dont get mixed up with daily egg gathering? -Whats the opinions on leaving hen in coop with other chickens when raising chicks? -Any other advice or learned lessons would be wonderful. Coop situation: 13 chickens (1 roo) in a coop that is 10 x 20 with a run outside thats twice as big-so plenty of space.