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The Pacific gull is a large white-headed gull with a distinctively heavy bill.. Gulls range in size from the little gull, at 120 grams (4 + 1 ⁄ 4 ounces) and 29 centimetres (11 + 1 ⁄ 2 inches), to the great black-backed gull, at 1.75 kg (3 lb 14 oz) and 76 cm (30 in).
Most birds have four toes, typically three facing forward and one pointing backward. [7] [10] [8] In a typical perching bird, they consist respectively of 3, 4, 5 and 2 phalanges. [2] Some birds, like the sanderling, have only the forward-facing toes; these are called tridactyl feet while the ostrich have only two toes (didactyl feet).
The European herring gull (Larus argentatus) is a large gull, up to 66 cm (26 in) long. [2] It breeds throughout the northern and western coasts of Europe. Some European herring gulls, especially those resident in colder areas, migrate further south in winter, but many are permanent residents, such as in Ireland, Britain, Iceland, or on the North Sea shores.
European birds lack the long gray tongues on the 6th, 7th, and 8th primaries and solid black markings on the 5th and 6th primaries that are shown by American herring gulls. [11] First-winter European birds have more checkered upperparts, more streaked underparts, and a paler rump and base to the tail. [5]
About one half of bird species with fovea have a single one, but uniquely in birds, [221] some, such as terns, kingfishers and hummingbirds, have a second fovea, [222] called the temporal fovea, that assists in judging speed and distance and increases visual acuity. Birds that do not have a second fovea will sometimes bob their head to improve ...
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The great black-backed gull (Larus marinus) is the largest member of the gull family. It is a very aggressive hunter, pirate, and scavenger which breeds on the coasts and islands of the North Atlantic in northern Europe and northeastern North America.
In some very rare cases, seagulls have been known to snatch small dogs from their owners. One dog, Gizmo, was stolen from his garden by seagulls in 2019. Seagulls are also strong enough to snatch ...