None of my hens gorge themselves on anything new I introduce unless it is their scrambled eggs and fresh collards. Otherwise with other greens they take what they want without frenzy. Here in Florida Timothy and Alfalfa is truly expensive!!!! Tried our pastures grass clippings in the outside pens this summer and they played with it more than feasting. We don't use insecticides on the pastures so I don't worry. Just thought hay would be an alternative.
