why did the alaotra grebe go extinct

... the western black rhino and a bird called an Alaotra grebe have ... and they should go … Caribbean Monk Seal Declared extinct in 2008. Canarian Oystercatcher Alaotra grebe Declared extinct in 2010, although experts believe it might have been extinct years earlier. 10 Alaotra Grebe. It is the only known photograph of an Alaotra Grebe, a species officially extinct since 2010. Which Animals Have Recently Gone Extinct Worldatlas. Extant species range in size from the least grebe, at 120 grams (4.3 oz) and 23.5 cm (9.3 inches), to the great grebe, at 1.7 kg (3.8 lbs) and 71 cm (28 inches). the bird was declared extinct by the iucn in 2017. The North American and Eurasian species are all, of necessity, migratory over much or all of their ranges, and those species that winter at sea are also seen regularly in flight. Alaotra Grebe: The Alaotra Grebe, which is also known as Delacour's little grebe or a rusty grebe, was declared extinct in 2010, although it might have been extinct years earlier. This is an undated handout illustration released by Birdlife International of the alaotra grebe. Holdridge’s toad Declared extinct in October 2008. Alaotra Grebe. Officially declared extinct in 2010, the Alaotra grebe may have gone extinct much earlier, with the last confirmed sighting being in 1982. The fragile bird, known as the alaotra grebe, was finally declared extinct 25 years after the last confirmed sighting, according to BirdLife International. Here you can support a project to save the Junin Grebe https://www.indiegogo.com/projects/nest-success-of-critically-threatened-junin-grebe#/ Scientists were hesitant to write the small bird off too soon because it lived in Lake Alaotra, which is located in a … 10. Pinta Island Tortoise The last of his kind, Lonesome George died in June 2012 in his pen at a research facility. The Alaotra grebe was a small aquatic bird that was declared extinct in 2010. it’s believed to have gone extinct in the 17th century following the arrival of european colonists, who felled the trees it lived in and introduced non native species. The Alaotra grebe has been declared extinct due to the introduction of carnivorous fish into its habitat and the use of fishing nets that caught and drowned the bird. These birds lived in Madagascar in only one lake, Lake Alaotra, a large, shallow lake.
3. The very complicated process of determining whether an endangered animal is actually extinct. Barnosky added that if species classified as Endangered and Vulnerable go extinct as well, the world could suffer a sixth mass extinction within 300 to 2,200 years. Taken in 1985, a photograph of a charming little black and rust-colored water bird is a heartbreaking image. Alaotra Grebe (Tachybaptus rufolavatus)
The Alaotra grebe is now extinct. In 1985, two were sighted. The bird’s decline started in the 20th century after the introduction of the blotched snakehead which preyed on the bird. The bird was once endemic to Lake Alaotra (from which it gets its name) of Madagascar. Alaotra Grebe, 2010 birdlife.org This small diving duck lived in primarily in one lake in Madagascar until habitat loss and predation by carnivorous non-native fish species killed it off. A woodpecker native to bermuda, the species was recently described thanks to the retrieval of fossilised remains. credit of image : By L.Shyamal – Own Work CC BY SA 3.0 on Wikimedia Commons . Alaotra Grebe
The Alaotra grebe ate mainly only fish.
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