Most of my chickens are either babies or less than 5 months old. I do have 2 bantam hens, 1 game hen, and one bantam rooster that are adults. My 3 hens have babies, and 2 of my 'pullets' are setting on their first clutches. I have been keeping them all on starter, since I don't eat the eggs anyway, and it doesn't seem to be hurting them. They are all free-range, so it would be very hard to give the older ones layer, and not the babies. Some people I have spoken with seem surprised by this. Is it okay to feed them all starter? I am still buying chickens, so I figured the medicated feed would be good for them.