Focus on The Birds (sculpture) and analyze the Description.
The work depicts one male and one female house sparrow, each between 4.5 and 5.5 m (15 and 18 ft) tall, or approximately 50 times life size. The birds have been described as realistic and "massive yet friendly-looking". Their bodies are made from hard coated expanded polystyrene (EPS) foam, coated with a polyurea skin and airbrush painted, all clad around a steel armature. Their cast bronze legs were sealed with wax. According to Heavy, the EPS form pieces were "glued together with pressure-sensitive adhesive, specifically formulated for bonding EPS to itself and other materials".
polyurea house sparrow expanded polystyrene