Hi! Im new to chicken keeping - 2 years. Right now I have 8 hens. I live in the Central Pacific area of Costa Rica - moved here 4 years ago. I dont know the breed of my chickens but Im posting because one of my fat happy hens has large dry pieces of skin coming off her back and I cant find any info - see the attached picture...otherwise shes acting totally normal and theres no redness or inflamed area ... ...Ill post pics of my hen in a little bit maybe you guys can help me id the breeds? Thanks in advance!