My parrots new tail feathers look weird, help

He's an Indian blue ringneck and when i took him home i noticed he's wings had been cut, he was in pain, his tail fall off and he grew another tail 🥳, but now i noticed that his new feathers look like they were burnt or harmed by something, so i tried to touch it and he reacted with pain..? What could it possibly be?? Please help im worried about my little baby