I have a few heritage turkeys that free range and live with my chickens. A few days ago I noticed that one of them seems to be developing black caviar looking shiny black bumps on his/her head and neck area. I have scoured the Internet and all diseases and cannot find anything. His/her stool is loose but brown normal color today. The turkey is not lethargic or thirsty but other than the black caviar shiny things on its head and neck seems happy. Is this maybe the development of carunacles?