I have another hen (splash silkie 2 yrs old-always been healthy )whom I found two small scabs. one on each side of her oil gland,laterally. , and I picked them off and what I found inside was rotten stuff. It was hard and i pulled it out. I squeezed on them and it looked like some hard lard stuff came out. She was very unhappy so I know it hurt. Now there are 2 small holes there and am not sure I got it all. I will wait for tomorrow to treat her more. I am not really sure what it is or how to treat so am asking your advice on this one too. She is another older hen that I really dont want to lose. Thanks for reading and I hope you can give me some advice.