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The black-billed gull (Chroicocephalus bulleri), also called Buller's gull or tarāpuka , is a Near Threatened species of gull in the family Laridae. [ 3 ] [ 4 ] [ 5 ] This gull is found only in New Zealand , its ancestors having arrived from Australia around 250,000 years ago.
The adult great black-backed gull is fairly distinctive, as no other very large gull with black on its upper-wings generally occurs in the North Atlantic. In other white-headed North Atlantic gulls, the mantle is generally a lighter grey and, in some species, it is a light powdery grey or even pinkish. [11]
The black-tailed gull is medium-sized (46 cm) (19 Inches), with a wingspan of 126–128 cm (49.6 - 50.3 Inches). It has yellow legs and a red and black spot at the end of the bill. Males and females have identical plumage and features, although males are larger in size than females. [2] This gull takes four years to reach full adult plumage. [3]
They have a white head and body, grey back, grey wings tipped solid black and a bright yellow bill. Black-legged kittiwake adults are somewhat larger (roughly 40 cm or 16 in in length with a wingspan of 90–100 cm or 35–39 in) than red-legged kittiwakes (35–40 cm or 14–16 in in length with a wingspan around 84–90 cm or 33–35 in).
The black-headed gull (Chroicocephalus ridibundus) is a small gull that breeds in much of the Palearctic in Europe and Asia, and also locally in smaller numbers in coastal eastern Canada. Most of the population is migratory and winters further south, but many also remain in the milder areas of northwestern Europe.
The head, body, and tail of an adult silver gull are white, and the wings are light grey with white-spotted, black tips. [4] Adults range from 40–45cm (15-17 Inches) in length. [4] Their wingspan ranges from 271 to 314mm (10-12 Inches). [5] Adults have bright red beaks which gets brighter during breeding or when they get older. [6] [5]
Heermann's gull (Larus heermanni) is a gull resident in the United States, Mexico and extreme southwestern British Columbia, nearly all nesting on Isla Rasa in the Gulf of California. They are usually found near shores or well out to sea, very rarely inland. The species is named after Adolphus Lewis Heermann, nineteenth-century explorer and ...
The common gull (Larus canus) is a medium-sized gull that breeds in cool temperate regions of the Palearctic from Iceland and Scotland east to Kamchatka in the Russian Far East. Most common gulls migrate further south in winter, reaching the Mediterranean Sea, the southern Caspian Sea, and the seas around China and Japan; northwest European ...