Possible ingrown feather?

[Sandwitch]

Hi! Recently our rooster got his tail feathers ripped out. It for the most part just looks normal however one part of it looks red and maybe swollen? It also seems that small feathers are growing from it. I don’t know if it’s an ingrown feather or just a feather growing back normally? Honestly I don’t even know if it’s a preening gland or if it’s even an actual problem? We are still new to this whole chicken keeping thing and worried.

 

[Tookie]

It's just his preening gland, completely normal.

 

[Sandwitch]

It's just his preening gland, completely normal.

Thank you!!