Robert Louis Caldwell Kikoti Askari Siku (Red-headed agama), graphite pencil, 11 x 7. ← Previous Next → Robert Louis Caldwell, Kikoti Askari Siku (Red-headed agama), graphite pencil, 11 x 7. Robert Louis Caldwell, Kikoti Askari Siku (Red-headed agama), graphite pencil, 11 x 7.