I completed step one of becoming a mother hen. I bought all the 2x4's and fencing and chicken wire. My question for today is this: I plan on having 3 - 4 standard sized chickens, leaning toward barred rocks and rhode island reds to start. No more than 4 chickens. How long will a 50 lb bag of layer feed last for 3 or 4 chickens? I plan to give them our leftover vegetables/rice after dinner, and let them free range for about an hour in the late afternoon. What do you think??