The only thing I could think of was he must have had tourists offer him crackers. But he seemed to want fashion accessories:
He soon tired of my glasses and decided my Warriors sweatshirt was more interesting and he stole it.
I later asked the ranger if the tourists feed the condors and she said no, the condors are only interested in carrion. I told her about my experience and she was surprised, especially when I showed her the photos. She said I must smell like dead carrion and hence him taking my sweatshirt and inspecting it for a few minutes. 😳
She said they all have their own personalities and she would report this one to the condor team for them to haze him with a spray bottle or something to teach him to be less comfortable with humans.