 When Duke attended the Rhode Island School of Design in the 1990s, he says he lived in the cupola of an old house in Providence, which he shared with a flock of pigeons. And I was trying to use like pigeon egg yolk to make the paint and then making all my own pigments. I was kind of taking green from the copper flashing on the roof and grinding up eggshells to make white and stuff like that, grinding up brick.