After reading some posts in this forum about spinach and kale being bad for chickens and especially ducks, due to its oxalate content, I've been hesitant to feed it to my hens, even though it's their very favorite green. So can anyone recommend other greens that would be perfectly safe to feed them on a daily basis? I give them arugula a lot, and they like it, too, but I'm sure they are probably getting tired of it. They don't like most lettuces. They will peck a hung-up whole cauliflower clean in a few days, though they don't really care for cauliflower lying on the ground or broccoli florets. Parsley, cilantro, and watercress were not well received. It seems they want spinach. I can't find any conclusive research stating it is harmful. I remember when the theory went around about 5 years or so ago that spinach was bad for humans. But has this pretty much been debunked or not? I don't want to do anything to hurt the chickens.