I have four Australorp crosses that free range till dark every day (unless we are not at home-which isnt very often) they are healthy and are all producing eggs every day. BUT they are not showing any interest in scratch mix or layer pellets . They even turned their noses up at a neighbours bounty of greens. Is it because they are getting sufficient from their natural diet? I still leave it out (the wild birds love it) with fresh water and grit, but it generally goes untouched. Any thoughts. They have been doing a great job around the fenceline of my property - no need to Whippersnip(string line cutter) and I haven't seen a snail in weeks!!!!!