Friday, September 24, 2010

Atlantic Yellow-nosed Albatross – Tristan da Cunha 2003

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Tristan da Cunha Post Office issued the stamp series of Albatross from their islands, Atlantic Yellow-nosed Albatross. Logo of Birdlife International marked on stamps as evidence that the stamps have issued in colaboration between Tristan da Cunha with Birdlife International organization.on year 2003.

The Atlantic Yellow-nosed Albatross, Thalassarche chlororhynchos, is a large seabird in the albatross family. The bird size is averages 81 cm in length. The Atlantic Yellow-nosed Albatross is typical black and white mollymawk with a grey head and large eye patch, and its nape and hindneck are white. Other distinctintive  on the bill  is black with a yellow culmenicorn and a pink tip. The Atlantic Yellow-nosed Albatross has a blackish grey saddle, tail and upperwing, and its underparts are predominantly white.It Its underwing and primaries show a narrow black margin. The juvenile is similar to the adult but with a white head and black bill. 

The Atlantic Yellow-nosed Albatross feeds on squid, fish and crustacea. They live in colony and build pedestal nests of mud, peat, feathers, and vegetation to lay their one egg in.The Atlantic Yellow-nosed Albatrosses nest on islands in the mid-Atlantic, including Tristan da Cunha and Gough Island. At sea they range across the south Atlantic from South America to Africa between 15° S and 45° S. They do this in September or early October, and the chick fledges in late March to April. They breed annually.

The IUCN list this species as Endangered with the total between 55,000 and 83,200 total adult birds. (based on survey  of year 2001). Trends suggest a 50% decrease over 72 years. The largest threat is from longline fishing, as harvesting of chicks and adults has been outlawed.

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