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.
♦ 2ECOLOGICAL OBSERVATIONS ON THE TROPICAL COLUBRID SNAKE LEPTODEIRA ANNULATA, Laurie J. Vitt, Herpetological Natural History, 4 (1), 1996, pages 69-76