Ptilonorhynchus violaceus -- Satin Bowerbird. Alternate name on piece: Ptilonorhynchus holosericeus [Satin bower bird] Two birds in a portrait format layout, used in printing a double-spread plate; at least 4 other head positions either applied over the main forms or in the background Artist's name(s): Gould, John; Gould, Elizabeth. Extreme detail with feathering, bills and leaves is consistent with Mrs. Gould's style; this identification not certain.