So let's say we have 1- 1yr old hen, 4- 5mo. old pullets and 14- 3mo. old undetermined. And two roosters. I know I should feed starter until they start laying and then switch to layer. Question is: If all these critters live together and eat together...how on earth do I feed each the right stuff? I've been buying a bag of each, mixing it together and hoping for the best. What about the roosters? All of my birds free range (except for the two new d'uccles). I've noticed runny poops in the coop in the a.m. and wonder if they're not getting the right food.