Attributes / relations provided by
♦ ¹Foraging behavior of a generalist marine top predator, Japanese cormorants (Phalacrocorax filamentosus), in years of demersal versus epipelagic prey, Y. Watanuki, K. Ishikawa, A. Takahashi, A. Kato, Marine Biology (2004) 145: 427–434
♦ ²"Foraging behavior and Diet of Streaked Shearwaters Calonectris leucomelas Rearing Chicks on Mikura Island", Kei Matsumoto, Nariko Oka, Daisuke Ochi, Fumihito Muto, Takashi P. Satoh and Yutaka Watanuki, Ornithological Science 11(1):9-19. 2012