Mister Grey Bird On My Shoulder

I'm working with a cranky cockatiel on my shoulder at the moment. Jack-Jack panicked over something I couldn't see, flew out of his cage and tried to fly through the dining room window. He is okay, just shaken up. I have him on my shoulder recuperating while I work. He's trying to unlink the fine chain on my necklace at the moment. He's being surprisingly careful with my skin underneath the necklace. Normally he would just take a bite out of that to be on the safe side.