Possible tumor on rooster? Hard lump, covered in feathers, with no signs of wound or scab

[StephJuno]

Hello!
I recently noticed that my brassy back bantam rooster (Tiny Roo) has a large (for him) bump on his back. It is a little smaller than a golf ball. I have attached a photo. The bump is hard, firmly in place and definitly beneath the skin. It is covered completely with healthy feathers and there is no sign of a wound, there is no scab or sign of infection, there is nothing external on the skin.
The bump has slowly, but noticeably been growing. There has been no change to Tiny Roo's behavior or appetite, etc. In every way he appears completely normal, aside from this bump. He is at least 4-5 years old (we adopted him 4 years ago).
Thank you for any advice!
-Steph

 

[Frizz Chickooster]

Hope you figure it out. You will probably get better advice talking with your local vet rather than talking on here (you never know though). There are some bird vets that you can text and wont have to take them into the vet. I asked a bird vet about my chickens free of charge.

 

[Eggcessive]

You can try to explore the cyst to see if there is an ingrown feather underneath which can cause an abscess. There could be solid pus inside. But it also may be a tumor, and there are viruses that may cause those, but not all tumors are virus-related.

 

[StephJuno]

Hope you figure it out. You will probably get better advice talking with your local vet rather than talking on here (you never know though). There are some bird vets that you can text and wont have to take them into the vet. I asked a bird vet about my chickens free of charge.

Thanks!

 

[StephJuno]

You can try to explore the cyst to see if there is an ingrown feather underneath which can cause an abscess. There could be solid pus inside. But it also may be a tumor, and there are viruses that may cause those, but not all tumors are virus-related.

thanks for advice! I'm going to examine him again this morning.