They are smart AF, but watch out for the beak too if it's injured/scared. A vet told me, if you handle a raptor, protect your hands, they can take a chunk.
Same goes for long billed birds[1].
I got a scratch on the side of my head once from a black kite that 'clonked' me with its talons as it flew past but this was just messing about, not a serious attack.
One other thing is how I would feed the birds. Some of them (e.g. a hooded vulture) I would pass food to their beak with my bare hand but with other birds this would be a good way to lose a finger.
Also, their Egyptian vulture likes playing with shoe laces (undoing them by pulling) and also tugging on leg hair if you are wearing shorts. The Yellow-billed kites like grabbing people's hats if they are wearing them.
My gawd, what a magnificent bird. I then understood why combat pilots would paint them on the sides of their fighters. It was much bigger than I realized, and the size of those talons - I was not going to get it mad at me!