I am a first time chicken guy. I have 15 young organic hens (an assortment of Buff Orpingtons, Australorps, Ameracuanas, Gold Stars and Rhode Island Reds) who will be ready to lay in a week or so. They are free range. They sleep in the coop at night but have run of our ranch during the day eating grasshoppers and other insects as well as seeds and plants. I am not sure how much to feed them. I have been setting out two pie pan sized portions of food in the morning (as well as a few scoops of chicken stratch) and two pie pan portions in the evening. I don't want to leave food laying out for them all day, because our dog (who by the way gets along well with our new gals) loves to eat just about any food that is around. Any suggestions on the amount I should feed them? I don't want to overfeed but want to make sure my girls are happy and healthy. Thanks in advance for any advice.