Picture of the day December 28 2019

Picture of the day December 28 2019

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Hainan gibbon

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Species  -  Latest posts  /  Genres  -  Latest posts  /  Animals  -  Latest posts  /  Mammals Hainan gibbon The Hainan black-crested gibbon or Hainan gibbon (Nomascus hainanus), is a species of gibbon found only on Hainan Island, China. It was formerly considered a subspecies of the eastern black crested gibbon (Nomascus nasutus) from Hòa Bình and Cao Bằng provinces of Vietnam and Jingxi County in Guangxi Zhuang Autonomous Region, China. Molecular data, together with morphology and call differences, suggest it is a separate species. Its habitat consists of broad-leaved forests and semi-deciduous monsoon forests. It feeds on ripe, sugar-rich fruit, such as figs (Ficus spp.) and, at times, leaves, and insects. Current status Hainan black-crested gibbons are under grave threat of extinction. They are currently identified as critically endangered on the International Union for Conservation of Nature’s Red List. Historically, they w...
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Explore the Family Tree

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Species  -  Latest posts  /  Genres  -  Latest posts  /  Animals  -  Latest posts  /  Mammals Explore the Family Tree Uncovering ungulate taxonomy All ungulates are mammals (Class Mammalia) - a group of warm-blooded (endothermic) animals with backbones. Taxonomically, mammals are animals (Kingdom Animalia) and belong to the Phylum Chordata, Subphylum Vertebrata. Mammals can be distinguished from other animals by the presence of milk-producing skin glands - these mammary glands, for which the Class Mammalia is named, are found in every mammal and nowhere else in the Animal Kingdom. Many other characters are used to diagnose mammals, including the presence of hair, three middle ear bones, and a four-chambered heart. Within the mammals, there are two extant subclasses: the Prototheria, containing only three modern species of egg-laying monotremes (Order Monotremata); and the Theria, or viviparous mammals (those which give birth to...
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Avalanche

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Natural disasters :  Avalanche - Latest posts An avalanche (also called a snowslide) is an event that occurs when a cohesive slab of snow lying upon a weaker layer of snow fractures and slides down a steep slope. Avalanches are typically triggered in a starting zone from a mechanical failure in the snowpack (slab avalanche) when the forces of the snow exceed its strength but sometimes only with gradual widening (loose snow avalanche). After initiation, avalanches usually accelerate rapidly and grow in mass and volume as they entrain more snow. If the avalanche moves fast enough, some of the snow may mix with the air forming a powder snow avalanche, which is a type of gravity current. Slides of rocks or debris, behaving in a similar way to snow, are also referred to as avalanches (see rockslide). The remainder of this article refers to snow avalanches. The load on the snowpack may be only due to gravity, in which case failure may result either from weakening in the snowpack or incr...
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