Feed marbles into his head and watch the birds go up and down as each marble rolls down the chute. A fun and fascinating project inspired by the birds that eat bugs off real crocodiles. Inexpensive to build from 1/4" plywood and 3/4" scraps of stock. All patterns drawn FULL SIZE. Measures approximately 13"H x 15"L. Order #9299 Green Eyes, #AP4 Axle Pegs and #3129 Game Marbles 1" separately.