I have 8 birds of 4 different breeds. Of those 8 only my 2 buffs seem to be affected. They have a ring of bare skin around their necks and I don't know if their poo is watery or not. It's loose but not any worse than I've ever seen. I'm worried. And if it's worms we don't have a vet anywhere around that takes care of chickens. SO what do I do if it is worms. How can I treat them?