Diet Overlap

Larus argentatus (Herring Gull)
Phoca vitulina (Harbor Seal)

Common Diet

Gadus morhua (rock cod)
Illex illecebrosus (northern shortfin squid)
Merlangius merlangus (Whiting)

Common Habitat

Anda
Berwickshire and North Northumberland Coast
Bombay Hook National Wildlife Refuge
Cabrillo National Monument
California Coast Ranges Biosphere Reserve
California Floristic Province
Cape Breton Highlands National Park
Cape Cod National Seashore
Cape Hatteras National Seashore
Channel Islands National Marine Sanctuary
Channel Islands National Park
Dornoch Firth and Morrich More
Dungeness
Elkhorn Slough Preserve
Essex Estuaries
Farallon National Wildlife Refuge
Firth of Lorn
Firth of Tay & Eden Estuary
Flamborough Head
Forillon National Park
Gateway National Recreation Area
Glacier Bay National Park and Preserve
Gwaii Haanas National Park Reserve
Hallands Väderö
Hund und Paapsand
Isle of Rum National Nature Reserve
Japan
Kejimkujik Seaside Adjunct
Kouchibouguac National Park
Kronotskiy Biosphere Reserve
Mingan Archipelago National Park Reserve
Moray Firth
Morecambe Bay
North America
North Norfolk Coast
Pacific Rim National Park Reserve
Pembrokeshire Marine/ Sir Benfro Forol
Point Reyes National Seashore
Prince Edward Island National Park
Redwood National Park
Reserva de la Biosfera El Vizcaino
Reserve de la Biosphere d'Iroise
Reserve de la Biosphere de Charlevoix
Ruegen
Saguenay - St. Lawrence Marine Park
Sefton Coast
Severn Estuary/ Môr Hafren
Solent Maritime
SPA Östliche Deutsche Bucht
St Kilda
Taynish National Nature Reserve
Terra Nova National Park
Ukkusiksalik National Park
Waddensea Area
Waddensea of Schleswig-Holstein
Wapusk National Park
Wrangell-St. Elias National Park and Preserve

Attributes / relations provided by
♦ 1Diets of adult and chick Herring Gulls Larus argentatus argenteus on Ailsa Craig, south-west Scotland., M. Nogales, B. Zonfrillo and P. Monaghan, SEABIRD 17: 56-63
♦ 2The harbour seal Phoca vitulina as a predator in the Skagerrak. Haerkoenen, T | Heide-Joergensen, M-P, Ophelia. Vol. 34, no. 3, pp. 191-207 1991
♦ 3Feeding Spectrum and Trophic Relationships of Short-finned Squid (Illex illecebrosus) in the Northwest Atlantic, Yu. M. Froerman, NAFO Sci. Coun. Studies, 7: 67-75 (1984)
♦ 4CephBase - Cephalopod (Octopus, Squid, Cuttlefish and Nautilus) Database