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The Bonin grosbeak or Bonin Islands grosbeak (Carpodacus ferreorostris) is an extinct finch. It is one of the diverse bird taxa that are vernacularly called "grosbeaks", but it is not closely related to the grosbeaks sensu stricto. Many authorities place the species in the genus Carpodacus, but some place it in its own genus, Chaunoproctus.
This list includes 18 extinct species, the Bonin grosbeak and 17 Hawaiian honeycreepers. [ 1 ] This list is presented according to the IOC taxonomic sequence and can also be sorted alphabetically by common name, binomial, population, and status.
The following is a list of grosbeak species, arranged in groups of closely related genera. These genera are more closely related to smaller-billed birds than to other grosbeaks. Exceptions are the three genera of "typical grosbeak finches", which form a group of closest living relatives and might thus be considered the "true" grosbeaks.
Bonin grosbeak: Carpodacus ferreorostris: Chichi-jima, Bonin Islands Last collected in 1828; claims of survival until 1890 are not substantiated. Likely disappeared because of deforestation and predation by introduced rats and cats. [104]
Bonin grosbeak, Carpodacus ferreorostris (Chichi-jima, Ogasawara Islands, 1830s) ʻŌʻū, Psittirostra psittacea (Hawaiian Islands, c. 2000?) Officially classified as critically endangered, this was once the most widespread species of all of the Hawaiian honeycreepers. It has not been reliably recorded since either 1987 or 1989.
Japan has no endemic families. It has one endemic genus: Apalopteron, which contains the Bonin white-eye. [1] [2] The extinct Bonin grosbeak was formerly considered the only member of the genus Chaunoproctus, but taxonomic analysis supports it as being a basal member of the rosefinch genus Carpodacus.
Bonin grosbeak: Carpodacus ferreorostris: Bonin Islands, Japan 1854 1988 (IUCN) Possibly deforestation and predation by introduced cats and rats. [251] Bonin thrush: Zoothera terrestris: 1889 1988 (IUCN) Probably predation by introduced cats and rats. [252] c. 1829 [253] Tonga ground skink: Tachygyia microlepis: Tonga 1996 (IUCN)
Among birds, the Bonin white-eye (Apalopteron familiare), a gaudy-colored passerine, seems to occur nowhere else anymore than on Hahajima. [6] The extinct Bonin grosbeak (Chaunoproctus ferreorostris) is sometimes said to have occurred in the Hahajima Group (though not on Haha-jima itself), but this seems not to be true.