I've got 3 five-week-old Ancona ducklings and I'd like to add some oats to their Starter (they're on Starter and oatmeal right now, but the oatmeal's too pricey and its protein's higher than I'd like). Our local feed store is out of rolled oats, but I could get a bag of whole oats. I've heard that rolled oats are recommended for ducklings, but has anyone used whole oats for young ducklings, about 5 weeks? Or should I just feed the oatmeal until they get the rolled oats back in stock this Friday or next and pay the extra $5? Thanks!