Literature
  • Erikstad 1990
  • Winter diets of four seabird species in the Barents Sea after a crash in the Capelin stock. Polar Biol. 10: 619-627
  • Durinck 1991
  • Winter food of Guillemots Uria aalge in the Skagerrak. Dansk Ornithologisk Forenings Tidsskrift 85: 145-150
  • 1991
  • Winter foraging by Common Seals (Phoca vitulina) in relation to food availability in the inner Moray Firth, N.E. Scotland. J. Anim. Ecol. 60: 283-294