| Bonin Grosbeak | |
|---|---|
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| Scientific classification |
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.