Okay I have a seperate coop for my cochins (and a couple of other bantams), Everyone is together except for my 6 and 7 week olds, they are still seperated. The youngest that is loose in there is 10 or 11 weeks. The oldest is my blue pullet she's around 16ish weeks of age.....and she's doing the "egg stomp", when my RedStars started doing that they started laying very soon afterwards. So when should I switch Blue Jeans over to layer...now? Also being she's in with a mixed age group how should I go about feeding her Layer food? There are 3 that fly up to the upper most reaches of the coop to roost and explore, she's one of them...the other 2 are @ an 11 week old and a 13 week old. If I put food up where she can fly up and get it, will it hurt the other 2 girls, if they eat it too? I don't want to split them up and then have to reintroduce later on when the others are older. Also my Frizzle, Rizz, is in there he's @ 13-14 weeks.....I have seen him mount Blue Jeans.......is it possible for her first eggs to be fertile already? Can Rizz already be fertile?