I have 4 RIR hybrid hens. They are just over a year old and I got them from a much larger farm flock. They are in my fenced back yard with free range of about 1/4 acre. The area is heavily wooded, so grass isn't there. There are some weeds, but mostly english ivy (which they don't eat) and tree saplings and other scrubby things. Their best finds are bugs (lots) under the leaves (that we never rake/clear). But I don't think they get tons of green. We normally throw out three handfuls of crumbles in the morning and three more in the late afternoon. We throw out egg-shell once a day. Water available 24/7. Occasional kitchen scraps, but it great moderation. Today, they were super snippy with each other at the afternoon crumble time. Super defensive of their food! Like, everyone was pecking everyone, not just a "pecking order" thing. It was more vicious than normal too. They were pecking and biting and holding on. A few feathers flew as well. I'm wondering if I should have crumble available 24/7 since they don't get a ton of greens from the yard.