Devils Flower
Songster
I have done most my research for turkeys but alot of the things that can help turkeys also can help chickens. So im placing this link here so if you want to check it out and see if anything will help you out or if you would like to add to the link. Some info is from bloggers and vets and science-based. Very little information has been given from BYC members. I hope this link helps you.
Thread 'Yearly preventative from Parasites and Disease.'
Thread 'Yearly preventative from Parasites and Disease.' https://www.backyardchickens.com/threads/yearly-preventative-from-parasites-and-disease.1478923/
Thread 'Yearly preventative from Parasites and Disease.'
Thread 'Yearly preventative from Parasites and Disease.' https://www.backyardchickens.com/threads/yearly-preventative-from-parasites-and-disease.1478923/