https://www.fda.gov/animal-veterinary/resources-you/blackhead-disease-poultry
That's the government.
1. I don't believe in protozoans with complex lifestyles that allegedly cause disease.
2. Too many drugs and controlled substances are "recommended" for the treatment of the said disease.
3. Turkey meat makes you sleepy? No. Tryptophan? No. Come on, that's a common protein, an essential part of a normal diet.
4. Someone is poisoning the birds. People are picky eaters and prefer chicken, pork, and beef.