I’ll call the local avian vet and see when they can get him in.Awww
Thst is a little different than I imagined. I'm afraid there could be a health reason . I recommend getting him in to the vet .
Yes they will keep getting pins and might let some grow a little then pluck out again.
This pattern...I'd want checked out. I'm afraid it's from internal pain.
I'm so glad the little old man is with you! He is a cutie.