I gave up long ago trying to get the chickens to do things my way, and at that point, I started free ranging them. I now leave my coop open 24/7 and of course there is feed and fresh water in there, but apart from one or two of my birds, the rest of the flock only go into the coop at night, at which point they may have a quick snack. Just yesterday I had to empty their feeder out and put in some fresh pellets simply because since they started free ranging, they just tend to prefer the food nature is providing for them. At the moment, even with free choice available, I spend about $1.70 per week on my 14 birds and 2 ducks, and that includes a little bit of corn which they all love. I put 2kg's of pellets in their feeder yesterday, and that will last them for exactly one week. Once we hit the dry season, they'll more than likely eat more pellets, and once all the eggs hatch, feed bill will go up as well, but not by very much. BTW, only six are hens, while the rest are all roos destined for the pot, except the head roo.
What my birds find to eat in the garden I don't know, but apart from an afternoon nap and dust bath, they are eating non stop. Well, I suppose it takes a while to fill your tummy if you're only eating the tinies of insects. Not complaing though, because it at least keeps them busy in their own little chicken world.
Now, if it were me, I'd head for the feeder, fill myself up, have a drink, and then I'd relax some place in the shade