Because of losing so many of my girls and boys to hawks and fox my chickens are confined to a pen--fairly large and with lots of poles that serve as a jungle jim to give low ladies in the pecking order plenty of escape room. To satisfy their urges for grass and bugs I pull clumps of grass and other weeds that I know they like, chick weed particularly, from the edges of my manure pile where is pulls easily. I carry the grass with large clumps of dirt down to the pen where they happily kick it apart searching for the earwigs, pillbugs, worms and grubs. I keep one of those little rakes next to the gate so that I can easily clean up the detritus when they are done with it. They only problem I've ever had is the occasional tangle around a foot and once or twice I had to pull a long strand of grass, that someone couldn't manage to swallow, out of a beak. The girls see me walking toward the pen, swarm the gate and start cackling happily because they know that special goodies are on the way. Several of them come right up to take Junebug grubs right out of my hand. Nice to know I've been doing right by them--keeping them safe from predators but satisfying their needs for greenery and bugs.