Bonin Grosbeak
220px-Chaunoproctus ferreorostris crop
Common Name Bonian Islands Grosbreak
Range Chichi-jima in the Ogasawara Islands
Scientific Classification
Kingdom Animalia
Phylum Chordata
Class Aves
Order Passeriformes
Family Fringillidae
Genus Chaunoproctus
Species C. ferreorostris
Conservation Status

The Bonin Grosbeak or Bonin Islands Grosbeak (Chaunoproctus ferreorostris) is an extinct finch, the only species of the genus Chaunoproctus. It is one of the diverse bird taxa that are vernacularly called "grosbeaks", but it is not closely related to the grosbeaks sensu stricto.

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