I have a question... Do you have to break the nut up? I know that their gizzards will grind it, but is there a choking hazzard with a peanut or larger nut like an almond?
I have a bag of black sunflower seeds, I threw a hand full to my chickens and they gobbled them up. I watched and they just picked them up and swallowed them. Think it's ok to keeping them.