Our flock just more than doubled since I picked up 23 hens & 1 rooster for free yesterday. How much food would you expect to go through for 35 chickens (2 roos, the rest laying hens)? They are cooped up until mid morning and then are allowed to free range. They tend to just hide around in the bushes and stuff though. Any idea how to get them to go out and forage more? Thanks!