I will NOT get rid of my stinky darlings, who live in my bedroom and are, yes, stinky hens at 9 months now. Regardless of feed, my hypothesis is the smell is due to their dark skin melanin pigmentation and the chromosomal 5 toed thing which twists the balance of the anal and/or the digestive glands that scent in their poopies to make that strong odor. I know females have a pre-poop during egg-laying that is foul, but their regular poops are pretty eyebrow-raising to those unfamiliar with this event horizon. But I am too in love with them, so my stock of holiday pumpkin pie smell really helps after my white one blows a good one! My bearded marbled black&white isn't as fierce.