Please help I am a new member. My hand is like my dog. Are used to have a lot of chickens and I had to move but my chicken Sammy has been with me since she was a baby and we are Inseparable. This morning I noticed on top of her back beneath her to wings on her back there’s a big huge lump it almost looks like it is Oozes. There are light thin scabs almost greenish looking. I’m not sure what this could be? I don’t have a lot of money to take her to the vet. Does anybody have any idea what this could be that can help me please. She stays in at night so she’s not exposed to the weather anymore she’s about five years old. She is still eating. Thank you all so much please help