We have been talking about blackhead a lot, lately. I have posted several times on the subject myself. The first symptom most folks notice is the yellow to brown foamy diarrhea, including me. Now, the dangerous part; I have been thinking..... Blackhead is caused by a cecal worm, as part of its life cycle. Cecal worm lays eggs in soil; earth worm eats eggs; turkey eats earth worm and cecal worm eggs hatch in turkey, causing blackhead. Is this essentially correct? So, my question as to "How is it possible?": One of my chicks had the light brown foamy diarrhea on the day I brought my brood home. The diarrhea started to spread in the brooder and continued in the coop, before my turkeys had eaten ANYTHING BUT TURKEY STARTER. Before they had ever set foot to ground, or had eaten any wild fodder. So, where and how did my flock get turkey blackhead? As suggested here, I started giving my flock cayenne pepper in their feed. A considerably higher dose than suggested, but they seem to like it. After 3 days, the diarrhea is all but gone.