Attributes / relations provided by
♦ ¹Yick, Jonah L., Adam Barnett, and Sean R. Tracey. "The trophic ecology of two abundant mesopredators in south-east coastal waters of Tasmania, Australia." Marine Biology 159.6 (2012): 1183+. Academic OneFile. Web. 14 July 2014.
♦ ²del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.