I supplement with free choice alfalfa, sunflower seeds, flax seed, with boiled eggs, fruit and veges on occasion. I just started a meal worm farm (very easy by the way). I've have had chickens on my ranch for over 20 years with hundreds of wild birds because we have many decorative ponds, and I have never had any disease or even colds. I really have no idea why. Maybe I have the perfect elevation (3000 ft) or maybe the low humidity or it could all hit me tomorrow. I don't buy live birds and I don't show. My buyers show their birds and that is good enough for me. I get to live vicariously through them as I did this weekend. Two pullets I raised, splash and blue got BV.

(I confess I did not breed one of them. It was from a Catdance egg.