Several months ago my pen-raised wild turkey came down with the dreaded blackhead back when she was 4 months old. I caught it within the 1st 24 hours and doused the feed and water with Cayenne pepper. I'm talking a jar in a matter of 3 days. It worked right away, the 1st 24 hours the hen had stopped the sulfur colored loose droppings. Everything I found on the internet was grim news, but I came across an old-timers remedy using cayenne. My turkey runs with a banty and buff orpington. They all seemed to like the cayenne. I also hear it's good for parasites.