Literature
  • , Dye 1987
  • Sandeels Ammodytes marinus in the diet of the Fulmar Fulmarus glacialis in Shetland, Scotland. Seabird 10: 71-74
  • , Lockley 1954
  • Seabirds. Collins New Naturalist Series, Facsimile 1989, Bloomsbury Books, London 320pp
  • Des Clers, Prime 1996
  • Seals and fishery interactions: observations and models in the Firth of Clyde, Scotland. In: Greenstreet S.P.R. and Tasker M.L. (Eds.) Aquatic Predators and Their Prey. Blackwell Scientific Publications, Oxford. 58-64
  • Tollit, 1996
  • Seasonal and between-year variations in the diet of harbour seals in the Moray Firth, Scotland. Can. J. Zool. 74: 1110-1121
  • Halley 1995
  • Seasonal and geographical variations in the diet of Common Guillemots (Uria aalge) off western Scotland. Seabird 17: 12-20
  • Härkönen 1987
  • Seasonal and regional variations in feeding habits of the harbour seal, Phoca vitulina, in the Skagerrak and the Kattegat. J. Zool. , Lond. 213: 1-9
  • Kruuk, Moorhouse 1990
  • Seasonal and spatial differences in food selection by otters (Lutra lutra) in Shetland (Scotland, UK). J. Zool. (London) 221: 621-638
  • Watt 1995
  • Seasonal are area-related variations in the diet of Otters Lutra lutra on Mull. J. Zool (London) 237: 179-194
  • 1985
  • Seasonal Changes in the Feeding Ecology of Guillemots (Uria aalge) off North and East Scotland. Est.,Coastal and Shelf Sc. 20:559-568
  • Libois 1997
  • Seasonal diet and feeding tactics of the European Otter (Lutra lutra) in central France. Vie et Milieu 47: 33-45
  • Kruuk 1987
  • Seasonal reproduction, mortality and food of otters (Lutra lutra L.) in Shetland. Symp. Zool. Soc. London 58: 263-278
  • 1998
  • Seasonal variation in the diet of harbour seals in the south-western North Sea. Mar. Ecol. Prog. Ser. 170: 269-281
  • Barrett 1991
  • Shags Phalacrocorax aristotelis as potential samples of juvenile saithe (Pollachius virens (L.)). Sarsia 76: 153-156
  • 1948
  • Shetland sanctuary. Faber, London
  • Peris 1995
  • Shifts in the diet of grey heron (Ardea cinerea) in the Duereo Basin, central west Spain, following the introduction of exotic fish species. Folia Zoologica 44: 97-102
  • Leopold, 1997
  • Slijtage van otolieten in de maag van een Aalscholver. Sula 11: 236-239
  • Seligman, Willcox 1940
  • Some observations on the birds of Jan Mayen. Ibis 14: 464-479
  • Bearhop 1999
  • Stable isotopes indicate the extent of freshwater feeding by Cormorants Phalacrocorax carbo shot at inland fisheries in England. J. Appl. Ecol. 36: 75-84
  • Lydersen 1989
  • Stomach contents of autumn-feeding marine vertebrates from Hornsund, Svalbard. Polar Record 25(153): 107-114
  • Recchia, 1989
  • Stomach contents of harbour porpoises, Phocoena phocoena (L.), from the Bay of Fundy. Can . J. Zool. 67: 2140-2146
  • Van Heezik, Seddon 1989
  • Stomach sampling in the Yellow-eyed Penguin: erosion of otoliths and squid beaks. J. Field Orn. 60: 451-458
  • Reijnders, Keijl 1997
  • Stormmeeuwen Larus canus eten Kleine Zeenaalden Syngnathus rostellatus. Sula 11(4): 227-229
  • Stegeman 1990
  • Stormvogeltjes Hydrobates pelagicus fouragerend in een haven. Sula 4(3): 99-100
  • Pennie 1948
  • Summer bird notes from Foula. Scott. Nat. 60: 157-163
  • Pilon 1983
  • Summer food of the Great and Double-crested Cormorants on the Magdalen Islands, Quebec. Can. J. Zool. 61: 2733-2739