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With them come their prime enemies, the greater black-backed gulls.
Thacher Island is home to herring and great black-backed gulls.
The great black-backed gull is additionally hunted for sport in Denmark.
The nesting great black-backed gulls took offense at its presence and three or four adults gave chase.
The maximum recorded age for a wild Great Black-backed Gull is 27.1 years.
Range is another good distinguishing feature; the great black-backed gull doesn't show up anywhere in Africa in winter.
During the winter, the Great Black-backed Gull often travels far out to sea to feed.
It will also directly attack and kill other seabirds, up to the size of Great Black-backed Gulls.
One great black-backed gull was seen to gulp down whole, like so many marshmallows, seven tern chicks within 30 minutes.
Double-crested cormorant dominate Swinburne, and great black-backed gulls nest on both islands.
Other birds seen around the bay are cormorants, herring gulls and great black-backed gulls.
The Great Black-backed Gull is bulky and imposing in appearance with a large, powerful bill.
The only species it might be confused with in Europe is the Great Black-backed Gull.
A confusable species in Europe is Great Black-backed Gull.
The Wick of Gossabrough attracts many birds, of note here in particular are the great black-backed gulls.
The remains of Shearwaters killed by the island's population of Greater Black-backed Gulls can also be seen.
Breeding colonies are predated by great black-backed gulls, harriers, corvids, herons and raccoons.
Great Black-backed Gull also feed on land animals, including rats at garbage dumps and even sickly lambs.
Like most gulls, Great Black-backed Gulls are opportunistic feeders.
In some biomes, where large eagles are absent the Great Black-backed Gull may be considered the apex predator.
Ring-billed, Herring and Great Black-backed gulls are abundant as well as various other waterfowl species.
Wildlife includes fallow deer and a great variety of birds including ospreys, hobby, oyster catchers and greater black-backed gulls.
It is considered the North Pacific equivalent of the largest gull species, the Great Black-backed Gull.
Greater Black-backed Gull (L marinus)
Great Black-backed Gull The island also includes one of the largest winter populations of Eider in Newfoundland.
With them come their prime enemies, the greater black-backed gulls.
The remains of Shearwaters killed by the island's population of Greater Black-backed Gulls can also be seen.
Wildlife includes fallow deer and a great variety of birds including ospreys, hobby, oyster catchers and greater black-backed gulls.
Greater Black-backed Gull (L marinus)
Mr. Donovan, who stops by often to check on its progress, said the falcon had killed a greater black-backed gull, a bird larger than the falcon itself.
So alluring is the dump as a food source that the Audubon Society's recent Christmas Bird Count registered 33,500 herring and greater black-backed gulls there.
I can't see a hedgehog putting up much defence against an angry or hungry Great Skua, Arctic skua, raven or greater black-backed gull.
Three species of the pesky scavengers gather year-round at New York's largest airport: the greater black-backed gull, the ring-billed gull, and the herring gull.
Ragged Island provides habitat for a large and diverse population of nesting seabirds, including the: eider duck, black guillemot, greater black-backed gull, herring gull and osprey.
The Great Black-backed Gull (Larus marinus), also known as the Greater Black-backed Gull or, informally, as the Black-back, is the largest member of the gull family.
Following the swans downstream, driving the canoe into the chop and cold spray, we approach the obscure mouth of the creek, flushing a whirling flock of greater black-backed gulls, the largest species of that world-girdling family.
Greater Black-backed (Larus marinus) and Herring Gulls (L argentatus) nest as do Common Shags.
The Great Black-backed Gull (Larus marinus) is known to have a small breeding colony on Gravel Island, and historically on Spider Island.
The 'Great Black-backed Gull', 'Larus marinus', is a very large gull which breeds on the European and North American coasts and islands of the North Atlantic.
The Great Black-backed Gull (Larus marinus), also known as the Greater Black-backed Gull or, informally, as the Black-back, is the largest member of the gull family.
Lesser numbers of Lesser Black-backed Gull Larus fuscus, Great Black-backed Gull Larus marinus and Common Shag Phalacrocorax aristotelis are also to be found.
Predators of the Atlantic Puffin include the Great Black-backed Gull (Larus marinus), the Great Skua (Stercorarius skua), and similar-sized species, which can catch a puffin in flight, or pick off one separated from the colony.
Słownik terminów ornitologicznych
