I recently finished building a chicken tractor and brought home 3 established layers from my dad's Arucana/Delaware/cornish cross stock. His hens don't free-range, but they have a pretty large (15'x15') "flight pen" in which to roam around, and he throws in grass clippings/scraps/etc. on a regular basis, but there's nothing growing in there anymore; it's all dirt. I live in suburbia and this is my first time having my very own chickens. Since bringing them home on Sunday, they've barely touched their feed, but they're going NUTS on the fresh grass that their "tractor" is parked on. Their feed is inside the enclosed part of their "tractor" right next to the nest box, and since I got 3 eggs from them yesterday, I know they've all gone inside the enclosed part at least once, so they know where the feed is. Also, it's the same feed I brought home from my dad's, so it's no different than what they're used to. But in 2 days, I don't think they've eatern more then a handful of feed, if that. So... if they have access to fresh growing grass every day, is it normal/OK for them to practically avoid real feed at all costs??? On one hand, I'm happy that my feed bill could be very light for the summer months, but on the other hand, I wonder if they're getting everything they need, nutritionally.