The proposal to delist the 23 species announced Wednesday will be open for public comment until the end of December, the agency said. Ivory-billed woodpecker relied on scarce habitat. The ivory-billed woodpecker was never known as a common bird because it depended on large Southern swamps with lots of space and food to thrive, according to the American Bird Conservancy.
Once its habitat began to disappear because of uncontrolled logging, the woodpecker became scarce. It was frequently shot by hunters and collectors, which likely contributed to its disappearance, the conservancy said. The last positively confirmed sighting of the ivory-billed woodpecker in the United States was in Louisiana in the s, said John Fitzpatrick, director emeritus of the Cornell Lab of Ornithology. It didn't help that the government was in on the campaign to exterminate the creatures.
In the mid-'90s there was a short-lived conservation effort but it was deemed too little, too late. Update: In , Animal Planet released footage of what it identified as a Zanzibar Leopard, but those claims have yet to be confirmed.
A native of Maui, Hawaii, the Po'ouli, or Black-faced Honeycreeper, was only discovered in the s. The birds inhabited the southwestern slope of Haleakala volcano. But the population declined rapidly, and by there were only three known Po'ouli left.
Efforts to mate the remaining birds failed and the species was formally declared extinct seven years later. Cause of Extinction: habitat loss, along with disease, predators and a decline in its food source—native tree snails—are all seen as reasons for the bird's demise. Cause of Extinction: loss of habitat due to construction as well as pollution from agricultural fertilizers are two major causes of the species' decline. While it hasn't been officially declared extinct, the butterfly hasn't been seen for decades.
The Carolina parakeet was the only bird of its kind native to the eastern portion of the U. Cause of Extinction: the Smithsonian notes that while a specific reason doesn't explain the parakeet's extinction, it's likely that deforestation and disease are what offed the brightly colored birds.
It also didn't help that their feathers were coveted fashion fixtures for women's hats. The majestic West African black rhino was declared extinct in , after conservationists failed to find any in their last remaining habitat in Cameroon. The West African black rhino was one of four subspecies of rhinoceros. The photo of the one pictured here was taken in while the rhino was under sedation for a routine horn trimming this is a preventive measure to deter poachers.
Cause of Extinction: poachers hunted the rhino for its horn, which is believed by some in Yemen and China to possess aphrodisiacal powers, leading to their extinction. The Tecopa pupfish, a native of the hot springs of the Mojave Desert, has the distinction of being the first animal declared extinct under the provisions of the Endangered Species Act of The pupfish's decline was precipitated when its natural habitat was encroached upon by developers.
The Falkland Islands wolf went extinct in the late s and was also known as the Antarctic wolf and the Falkland Islands fox. These wolves were native to the Falklands off of Argentina and were quite isolated from the world until humans reached the islands and hunted them kind of easily because the wolves were so friendly.
Scientists believe these wolves fed on penguins and other ground-nesting birds in addition to seal pups. Similar in appearance to the Sumatran tiger, the Javan tiger was native to the Indonesian island of Java. In the s they were so common they were considered pests by island natives, but as the island was developed their population dwindled. By the s, only 20 tigers remained.
Cause of Extinction: loss of habitat and agricultural development led to severe population decline. Conservation efforts in the s and '50s were unsuccessful due to a lack of adequate land and planning.
Native to Round Island, a tiny island off the coast of Mauritius, the Round Island Burrowing Boa preferred to live on the topsoil layers of volcanic slopes. It was once found on several other islands around Mauritius, but its population had dwindled by the s, and it could only be found on Round Island after It was last seen in Cause of Extinction: the introduction of non-native species of rabbits and goats to the island destroyed vegetation and upset the boa's habitat, leading to its eventual extinction.
The Pinta Island tortoise was around when Darwin visited the Galapagos in Sadly, a male named Lonesome George pictured , was the last purebred of this subspecies and passed in Cause of Extinction: goats that humans introduced to Pinta Island who destroyed their habitats, rats also introduced by humans who preyed on young tortoises, and humans killing the tortoises for their meat. The Siamese flat-barbelled catfish was a victim of humans building on land and rivers until its last sighting between and The Yunnan lake newt went extinct because its Kunming Lake habitat in China was destroyed and damaged by pollution, humans creating new land from parts of the lake, duck farming and the introduction of exotic fish and frog species.
It was last seen in According to the IUCN , global warming, an infectious disease, and air pollution all played a part. The Rotund rocksnail was once found in the Coosa River in Alabama. The Pyrenean ibex was a type of goat abundant across the Pyrenees mountains. It declined over two centuries from hunting, disease and inability to compete with other species.
The last was a female called Celia, who died in Twentieth-century fishers continued hunting the shrinking population. With the death of the last known Pinta Tortoise, Lonesome George in captivity since , in June , the species went extinct. The West African black rhinoceros was declared extinct in By that number had dropped to about 2, black rhinos and just three subspecies.
Widespread sports hunting in the first decades of the century quickly decimated rhino populations. The Ibex would grow to a height of cm at the shoulder and weigh kg and fed mainly on grasses and herbs. They were thought to have numbered 50, historically, but by the early s its numbers had fallen to fewer than The last Pyrenean Ibex was killed by a falling tree in northern Spain in It is estimated that between 3 and 5 billion Passenger Pigeons inhabited the US when Europeans arrived in North America, but their settlement led to mass deforestation resulting in habitat loss and a reduction in the bird population.
By the 19th century pigeon meat was commercialized as a cheap food for the poor, which resulted in hunting on a massive scale. The Passenger Pigeon died out in the wild by around , with the last known individual dying in captivity in Not related to tigers, the creature had the appearance of a medium-to-large-size dog it weighed 30kg with a nose to tail length of almost 2 metres but dark stripes gave it a tiger-like appearance. It is believed to have been hunted to extinction — this was encouraged by bounties — but human encroachment into its habitat, the introduction of dogs and disease could also have contributed.
The last wild Tasmanian Tiger was killed between and , with the last captive one dying in Hobart Zoo, Tasmania in Named after George Steller, a naturalist who discovered the creature in , Stellers Sea Cow was a large herbivorous mammal. It is believed that Stellers Sea Cow which grew to at least metres and weighed around tons, inhabited the Near Islands, southwest of Alaska and the Commander Islands in the Bering Sea.
It is believed that the mammal was tame and spent most of its time eating kelp; this, and the fact that it was unable to submerge its enormous body, is possibly what made it vulnerable to human hunters. A large and flightless bird found in the North Atlantic and as far south as Northern Spain. It had an average height of cm and weighed about 5kg.
0コメント