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.
♦ ²Nasua narica, Matthew W. Gompper, MAMMALIAN SPECIES No. 487, pp. 1-10 (1995)