Literature
  • Ogi, Tsujita 1977
  • Food and feeding habits of Common Murre and Thick-billed Murre in the Okhotsk Sea in summer, 1972 and 1973. Res. Inst. North Pacif. Fish., Hokkaido Univ, Special vol.: 459-517
  • Okill 1992
  • The diet of Cormorant Phalacrocorax carbo chicks in Shetland in 1989. Seabird 14: 21-26
  • Ormerod, 1986
  • The diet of Dippers Cinclus cinclus wintering in the catchment of the River Wye, Wales. Bird Study 33(1): 36-45