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The black swan (Cygnus atratus) is a large waterbird, a species of swan which breeds mainly in the southeast and southwest regions of Australia. Within Australia, the black swan is nomadic, with erratic migration patterns dependent on climatic conditions. It is a large bird with black plumage and a red bill.
The Northern Hemisphere species of swan have pure white plumage, but the Southern Hemisphere species are mixed black and white. The Australian black swan ( Cygnus atratus ) is completely black except for the white flight feathers on its wings; the chicks of black swans are light grey.
Russ Mittermeier, chief of Swiss-based IUCN's Primate Specialist Group, stated that 16,306 species are endangered with extinction, 188 more than in 2006 (total of 41,415 species on the Red List). The Red List includes the Sumatran orangutan ( Pongo abelii ) in the Critically Endangered category and the Bornean orangutan ( Pongo pygmaeus ) in ...
The species — several birds, mussels, two species of fish and the Little Mariana fruit bat last seen in Guam in 1968 — have been listed as endangered for decades, according to the U.S. Fish ...
The World's 100 most threatened species [1] is a compilation of the most threatened animals, plants, and fungi in the world. It was the result of a collaboration between over 8,000 scientists from the International Union for Conservation of Nature Species Survival Commission (IUCN SSC), along with the Zoological Society of London . [ 2 ]
Coscoroba swan: Coscoroba coscoroba (Molina, 1782) 28 Black swan: Cygnus atratus (Latham, 1790) 29 Black-necked swan: Cygnus melancoryphus (Molina, 1782) 30 Mute swan: Cygnus olor (Gmelin, JF, 1789) 31 Trumpeter swan: Cygnus buccinator Richardson, 1831: 32 Tundra swan: Cygnus columbianus (Ord, 1815) 33 Whooper swan: Cygnus cygnus (Linnaeus ...
The IUCN Red List of Threatened Species by the International Union for Conservation of Nature is the best known worldwide conservation status listing and ranking system. . Species are classified by the IUCN Red List into nine groups set through criteria such as rate of decline, population size, area of geographic distribution, and degree of population and distribution fragmenta
"The Black Swan" author Nassim Taleb says he's focused on hedging against a market collapse. He said the market is flashing parallels to prior crashes, noting that it is the most fragile in 20 years.