New GC Conure owner, bald spot

[Xenotoes]

Hello everyone, I got a conure about a month ago and he has a bald spot on his head, it's very noticeable. So I brought him to the vet last week and this week and they confirmed he has no diseases, mold, mites or anything, his poop looks good too. When I got him he was from a breeder, looked like a nice set up and house and stuff, but he was in a cage that wasnt very big, with like 6 other conures, so idk if maybe they were rough with him or he was stressed, also the breeder said he think he's around 2 years old, but the vet thinks he's younger because his eyes are still big and black, the leg cuff didn't have the year. Anyway I have him in a 70+ degree room with a humidifier and I use a spray bottle every day a couple times if he looks like he's vibin with it. He was scratching his head with his foot alot more until recently too, so maybe he was scratching his feathers too hard from itchiness idk. He's a happy bird, he likes my face and always walks around near my head next to the cage making small talkative noises, and he tells me when he wants food, he eats a lot too. Bro isn't stressed at all, so idk, any ideas?

Here's some pictures of him.

 

[clark_conure]

Best guess I got out and hit the ceiling and sandpapered off some feathers. (It happens) or getting a little picked on.