Cyst?

[Copperbottom]

noticed this tonight. Hard like a full tick. What’s the course of action?

 

[Eggcessive]

A possibility is an ingrown feather cyst. With those, you can use a sterilized needle to dig around under the skin to look for a feather. These may have pus inside.

A peck wound can also cause an abscess that might contain solid cheesy pus. Cysts can be common, as well as tumors.