I might have to do the same things for my my chickens. We have 12 (White Leghorn, Barred Rock, Wyandote, New Hampshire Red, Buff Orpington) most of whom are dual purpose layers/broilers. The shelter is a 12'x6' prismatic chicken tractor with an elevated loft with roost and nesting boxes (accessible by outside doors) with wheels on the back that I move every few days. One daughter goes around turning over rocks, finding beetles/worms/etc and brings them back as treats for the birds (who crowd around her whenever she approaches). I will be building a 12'x3' small moveable pen to house some birds when I finish with a garden raised bed in order to dig the soil mining for bugs and weed seeds. Also on the agenda is putting the chicken tractor in the sheep's paddocks before rotating the sheep through, so that intestinal parasite larva crawling up on the tips of grass stems end up as food for the chickens instead.

On the lateral side, we have Japanese Beetles, and I'm rigging up a pheromone trap with a hole cut in the bottom of the bag to dump the beetles into a shallow pan of water so that the chickens have their exotic food delivered to their plate.