Galloperdix bicalcarata -- Ceylon Spurfowl, Sri Lanka Spurfowl. Alternate name on piece: Galloperdix zeylonensis [Ceylon spur-fowl] Figures more spread out in published plate, and posture of the two lesser birds changed. Artist's name(s): Gould, John; Richter, Henry Constantine. Layout color sketch by Gould worked up by Richter and rough colored; Gould's changes penciled in over the color