Attributes / relations provided by
♦ ¹Trophic Ecology of the Dominant Fishes in Elkhorn Slough, California, 1974-1980, JAMES P. BARRY, MARY M. YOKLAVICH, GREGOR M. CAILLIET, DAVID A. AMBROSE, BROOKE S. ANTRIM, Estuaries Vol. 19, No. 1, p. 115-138, March 1996
♦ 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.