im sorry punkinpeepim new at this. i have 100 chickens all healthy but ive got 2 roos whoose feathers seem really oily looking. then they start loosing some feathers especialy tail feathers @ the front of their neck. other 2 roos dony have this problem. the sick ones are with about 15 hens each that have normal looking feathers. it dont make since maybe i can send pictures. the french black copper maran roo was sharp till he lost his tailfeathers. hens didnt pull them out they like the big guy. he is the boss of the yard but very gentle toward humans.