My chickens love collard greens. They go after it like nothing else when I put some in their coop. My daughter and I planted a fall garden for her agriculture class at school. We have broccoli, kale, and collards. I threw some old broccoli from the summer that had sent off shoots when the weather cooled off in the fall and they liked that, but I would find pieces left over in the coop. They like the kale too, but they kind of scratch at it and I will find pieces here and there scattered around. But, when I throw the collards in, they almost fight over it and the next day all I have left in the coop is the stalk. They eat every last piece of the leaf. They have full access to layer feed so I know they are not starving. They just love collards. Next spring when my full garden goes in, I will see what else they will like. Has anyone had their free range chickens destroy their vegetable garden? I would like them to get in there and mulch up the garden, but I don't want them to devourer my plants. I don't think I would have a collard plant left if they got into the garden.