Ptilinopus nainus -- Dwarf Fruit Dove. Alternate name on piece: Ptilonopus nanus [Tiny fruit-pigeon] Tracing on tissue. One of the 3 birds was omitted in the published plate, and the tree branches changed. Artist's name(s): Gould, John; Hart, William Matthew. The style is such that this might possibly be Richter's work, taken up by Hart.