Portal:Extinct and endangered species

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In biology and ecology, extinction is the cessation of existence of a species or group of taxa, reducing biodiversity. The moment of extinction is generally considered to be the death of the last individual of that species (although the capacity to breed and recover may have been lost before this point; see population bottleneck). Because a species' potential range may be very large, determining this moment is difficult, and is usually done retrospectively. This difficulty leads to phenomena such as Lazarus taxa, where a species presumed extinct abruptly "re-appears" (typically in the fossil record) after a period of apparent absence.

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Ptilinopus arcanus.svg
The Negros fruit dove (Ptilinopus arcanus) is a species of bird in the pigeon and dove family Columbidae. It is endemic to the island of Negros in the Philippines. This fruit dove is known from a single female specimen collected from the slopes of Mount Kanlaon in the northern part of the island. While it was found at a high elevation, it is suspected that the species originally lived in the lowland dipterocarp forests and was driven to higher elevations by habitat destruction. While some have suggested that the specimen is either a runt or a hybrid instead of a valid species, this is not widely accepted. The female Negros fruit dove was a small fruit dove with vivid dark green plumage and an ashy-grey forehead. It had a distinctive ring of bare yellow skin around its eye, and yellow fringes to some of its feathers gave it the appearance of having a yellow wingbar when perched. The throat was white, while the undertail and vent were yellow.


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Martha last passenger pigeon 1914.jpg
Martha, the last passenger pigeon, died in her cage in the Cincinnati Zoo and Botanical Garden on 1 September 1914.


Extinct and endangered species news

  • 12 June 2014 22 out of 99 lemur species are listed as critically endangered in the 2014 IUCN Red List. 48 species are endangered and 20 species are listed as vulnerable.
  • 29 June 2013 Almost 7 years after the find of a dead specimen a living Night Parrot, one of Australias rarest birds, was photographed and filmed for the very first time.
  • 5 June 2013 Chinese scientists unearthed the fossil remains of Archicebus, the oldest known primate with an almost complete preserved skeleton.





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Extinct and endangered species topics

Extinction - Extinction event - Local extinction - List of extinct animals - List of extinct plants - Fossil - Holocene extinction event - Cretaceous–Paleogene extinction event - Cambrian-Ordovician extinction events - Ordovician-Silurian extinction events - Triassic-Jurassic extinction events - Late Devonian extinction - Permian-Triassic extinction event - Signor-Lipps effect - Australian megafauna - Dwarf elephant - Pseudoextinction - Extinction Vortex - Prehistoric reptile - Human overpopulation - Human extinction - Voluntary Human Extinction Movement - Evolution - Biodiversity - Invasive species - Breeding back - Lazarus taxon - Endangered species - Critically Endangered - Vulnerable species - Least Concern - Data Deficient - BirdLife International - IUCN Red List - Endangered Species Act - International Union for Conservation of Nature

Extinction events

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The WikiProject for this topic is Extinction.

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See also Wikispecies, a Wikimedia project dedicated to classification of biological species.

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