In 1974 the Center for Art and Communication (CAYC), an Argentinian art center famous for its innovative exhibitions, hosted a show of conceptual art by 24 Hungarian artists, Hungría 74, and produced a portfolio now at the Getty Research Institute.
One of the objects in the show, Like a Bird, consisted of a cage that had been transformed by the artist István Haraszty into a conceptual piece. He installed an electrical-magnetic system, which controlled the door’s movement in relation to the position of a bird inside the cage. As the artist explained
"When the bird sits on the red-black resting pole, the door of the cage opens. When it flies towards the door, the magnetic field disappears. And the door once again closes."Below, some of the artist's notes on the installation.