I have a 9 1/2 month old silkie pullet, a 7 month old bantam cochin pullet, and a 6 month old barred rock pullet....I am told by my husband that the reason is because I am trying to use all the medicated chick feed that we bought before I go buy the layer pellets. I totally understand that (now I feel like an unfit chicken mama) but is that the only reason? Or are they just still too young? Also I have a 7 month old bantam cochin cockerel that has not made any "advances" on his girls...when will that start?? Thanks!