Bonin wood pigeon | |
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1832 illustration by Heinrich von Kittlitz | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Aves |
Order: | Columbiformes |
Family: | Columbidae |
Genus: | Columba |
Species: | †C. versicolor |
Binomial name | |
†Columba versicolor Kittlitz, 1832 | |
The Bonin wood pigeon (Columba versicolor) was a pigeon endemic to Nakodo-jima and Chichi-jima in the Ogasawara Islands, south of Japan. [2] It is known from four recorded specimens, the first from 1827 and the last from 1889. [3] They averaged a length of 45 cm. This pigeon died out late in the 19th century as a result of deforestation, hunting, and predation by introduced rats and cats. [4]
The Bonin wood pigeon was a medium-sized pigeon, with an average length of 45 cm. The upper parts of the pigeon's body were greyish-black with iridescence except on wing and tail. Crown has a green-purple iridescence, mantle to rump iridescent reflecting violet, amethyst and turquoise. Scapulars and remaining mantle glossed golden green with bronze reflections; wing coverts with dark turquoise green suffused with deep blue. The uppertail of the pigeon coverts broadly tipped with golden green. Breast to belly fringed with deep green and violet iridescence, being strongest on the breast. Iris blue or probably dark blue; bill greenish yellow having a pale tip; legs and the feet were dark red.
The last specimen of the Bonin wood pigeon was collected in the forests of Nakodo-Jima, Japan, on September 15, 1889. [5]
The Bonin wood pigeons usually mated in the trees or in the forests. Their eggs were particularly vulnerable to crows and other natural predators. They each normally laid two eggs and the eggs usually took 17 to 19 days to hatch into a young Bonin wood pigeon, just like extant wood pigeons.
The common wood pigeon, also known as simply wood pigeon, is a large species in the dove and pigeon family (Columbidae), native to the western Palearctic. It belongs to the genus Columba, which includes closely related species such as the rock dove. It has a flexible diet, predominantly feeding on vegetable matter, including cereal crops, leading to them being regarded as an agricultural pest. Wood pigeons are extensively hunted over large parts of their range, but this does not seem to have a great impact on their population.
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The pale-capped pigeon, also known as the purple wood pigeon, is a species of large pigeon that is found patchily distributed in parts of the Indian subcontinent and Southeast Asia. It has a slow flight and spends a lot of time sitting still in the foliage of large fruiting trees, often in riverine forest on the plains. It is mainly brown above and chestnut below with the a sheen of green or amethyst. Males have a whitish grey cap while females have a brownish grey cap and less gloss on the feathers. They are frugivores, foraging in small groups in the canopy of trees but sometimes descending to the ground for seeds and fallen fruit.
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The black wood pigeon or Japanese wood pigeon is a species of bird in the family Columbidae. It is found in East Asia along shorelines of the Pacific's Korea Strait, Philippine Sea and East China Sea. It is believed to be the largest representative of the genus, Columba, and has a weight of around 550 grams (1.2 lb) and an overall length of 43 cm (17 in). Its natural habitats are temperate forests and subtropical or tropical moist lowland forests. The species is in decline owing to habitat loss, habitat degradation, deforestation and hunting. This wood pigeon is endemic to the laurel forest habitat.
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The Bonin greenfinch, also known as the Ogasawara greenfinch, is a small passerine bird in the finch family Fringillidae that is endemic to the Ogasawara Islands of Japan, where it is found on the Bonin Islands and Volcano Islands. It was formerly considered a subspecies of the grey-capped greenfinch and some authorities consider it as such, but a 2020 analysis found it likely to represent a distinct species that diverged from C. sinica about 1.06 million years ago, and the International Ornithological Congress now recognizes it as such, making it the eleventh endemic species in Japan. There are fewer than 400 individuals in the population and it is considered critically endangered by the Japanese government, necessitating protection. According to the Yamashina Institute for Ornithology, as of December 2021, the Ogaswara greenfinch is Japan's most endangered bird.
The Bonin Islands are an archipelago of over 30 subtropical and tropical islands, some 1,000 kilometres directly south of Tokyo, Japan and 1,000 miles northwest of Guam.