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Simple English; Slovenščina ... Terns are long-lived birds and are relatively free from natural ... In 1961 the common tern was the first wild bird species ...
The common tern [2] (Sterna hirundo) is a seabird in the family Laridae. This bird has a circumpolar distribution, its four subspecies breeding in temperate and subarctic regions of Europe, Asia and North America. It is strongly migratory, wintering in coastal tropical and subtropical regions. Breeding adults have light grey upperparts, white ...
Saunders's tern (Sternula saundersi), sometimes known as the black-shafted tern, [2] is a species of bird in the family Laridae. It is sparsely resident along the shores of the north-western Indian Ocean (namely southern Somalia , Arabian Peninsula , Socotra , Pakistan , Andaman and Nicobar Islands and northern Sri Lanka ).
Adult royal tern and Cabot's tern (smaller bird, right) in flight at Core Banks, North Carolina. All white underparts Rodanthe, North Carolina. This is a large tern, second only to the Caspian tern but is unlikely to be confused with this "carrot-billed" giant, which has extensive dark underwing patches.
The greater crested tern feeds mostly at sea by plunge diving to a depth of up to 1 m (3.3 ft), or by dipping from the surface, and food is usually swallowed in mid-air. Birds may forage up to 10 km (6.2 mi) from land in the breeding season. Prey size ranges from 7–138 mm (0.28–5.43 in) in length and up to 30 g (1.1 oz) in weight.
The birds follow a somewhat convoluted course in order to take advantage of prevailing winds. [15] The average Arctic tern lives about 30 years and will, based on the above research, travel some 2.4 million km (1.5 million mi) during its lifetime, the equivalent of a roundtrip from Earth to the Moon more than three times. [16]
The type species is the common tern (Sterna hirundo). [3] Sterna is derived from Old English "stearn" which appears in the poem The Seafarer ; a similar word was used to refer to terns by the Frisians .
The white-fronted tern (Sterna striata), also known as tara, sea swallow, [2] black-billed tern, kahawai bird, southern tern, [3] or swallow tail, [4] was first described by Johann Friedrich Gmelin in 1789. [3] A medium-sized tern with an all-white body including underwing and forked tail, with pale grey hues on the mantle and upper side of the ...