Attributes / relations provided by
♦ ¹del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.
♦ ²THE FEEDING ECOLOGY AND DIGESTIVE TRACT MORPHOMETRY OF TWO SYMPATRIC TINAMOUS OF THE HIGH PLATEAU OF THE BOLIVIAN ANDES: THE ORNATE TINAMOU (NOTHOPROCTA ORNATA) AND THE DARWIN’S NOTHURA (NOTHURA DARWINII), Álvaro Garitano-Zavala, Jacint Nadal & Pamela Ávila, ORNITOLOGIA NEOTROPICAL 14: 173–194, 2003