I've started to hang a head of cauliflower in their (enclosed) chicken yard. I had to break into the 1st head to show them what it was all about and what to do, but it's been 'game on' ever since! Now, every time I look outside, the cauliflower is swinging back and forth!
BOSS, Kale, and Cucumber Peelings. Would give them the radish greens, but not sure if those are good for chickens.. Oh well. (Only thing that would make it better is if the Cucumbers were from our garden.. All of ours died..