American sculptor who was fascinated by the beauty of hanging mobiles. He made kinetic sculptures and wire figures.
He posed nude for his father's sculpture The Man Cub in 1902, the year he became interested in sculpture.
Though he specialized in sculpture, he is also known as the originator of the mobile.
His parents were Nanette Lederer and Alexander Stirling Calder.
He was friends with painter Georgia O'Keeffe.