The Gough finch (''Rowettia goughensis'') or Gough bunting, is a critically endangered

species In biology, a species is the basic unit of Taxonomy (biology), classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of ...

songbird A songbird is a bird belonging to the suborder Passeri of the perching birds ( Passeriformes). Another name that is sometimes seen as the scientific or vernacular name is Oscines, from Latin ''oscen'', "songbird". The Passeriformes contains 50 ...

Taxonomy

The Gough finch was formally described in 1904 by the British ornithologist

William Eagle Clarke Dr William Eagle Clarke FLS FRSE PBOU I.S.O LL.D. (16 March 1853 – 10 May 1938) was a British ornithologist. Life Clarke was born in Leeds where his father William Clarke was a solicitor and educated at the Grammar School and at Yorkshire Co ...

from a specimen collected on

Gough Island upright=1.3, Map of Gough island Gough Island ( ), also known historically as Gonçalo Álvares, is a rugged volcanic island in the South Atlantic Ocean. It is a dependency of Tristan da Cunha and part of the British overseas territory of ...

in the South Atlantic. Clarke coined the

binomial name In taxonomy, binomial nomenclature ("two-term naming system"), also called nomenclature ("two-name naming system") or binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, bot ...

''Nesospiza goughensis''. The Gough finch is now the only species placed in the genus ''Rowettia'' that was introduced in 1923 by the English ornithologist

Percy Lowe Percy Roycroft Lowe (2 January 1870 – 18 August 1948) was an English surgeon and ornithologist. Life Lowe was born at Stamford, Lincolnshire and studied medicine at Jesus College, Cambridge. He served as a civil surgeon in the Second Boe ...

. The genus name was chosen to honour John Quiller Rowett, an English businessman and the sponsor of the

Shackleton–Rowett Expedition The Shackleton–Rowett Expedition (1921–22) was Sir Ernest Shackleton's last Antarctic project, and the final episode in the Heroic Age of Antarctic Exploration. The venture, financed by John Quiller Rowett, is sometimes referred to as the ...

. The Gough finch was traditionally considered to be a bunting in the family

Emberizidae The buntings are a group of Old World passerine birds forming the genus ''Emberiza'', the only genus in the family Emberizidae. The family contains 45 species. They are seed-eating birds with stubby, conical bills. Taxonomy The family Emberizid ...

, but

molecular phylogenetic Molecular phylogenetics () is the branch of phylogeny that analyzes genetic, hereditary molecular differences, predominantly in DNA sequences, to gain information on an organism's evolutionary relationships. From these analyses, it is possible to ...

studies have shown that it is a member of the subfamily Diglossinae in the tanager family

Thraupidae The tanagers (singular ) comprise the bird family Thraupidae, in the order Passeriformes. The family has a Neotropical distribution and is the second-largest family of birds. It represents about 4% of all avian species and 12% of the Neotrop ...

and is

sister A sister is a woman or a girl who shares one or more parents with another individual; a female sibling. The male counterpart is a brother. Although the term typically refers to a familial relationship, it is sometimes used endearingly to refer to ...

to a clade containing birds in the genus '' Melanodera''. The species is

monotypic In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispec ...

: no subspecies are recognised. Another species of finch was described from Gough Island, ''Nesospiza jessiae'', in 1904. This species was later identified as a juvenile of the Gough finch.

Description

The Gough finch is in length and weighs .Ryan, P. & Sharpe, C.J. (2017). Gough Finch (''Rowettia goughensis''). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from http://www.hbw.com/node/62039 on 28 March 2017).

Distribution and habitat

It is

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found els ...

to the remote

, part of the British overseas territory of

Saint Helena Saint Helena () is a British overseas territory located in the South Atlantic Ocean. It is a remote volcanic tropical island west of the coast of south-western Africa, and east of Rio de Janeiro in South America. It is one of three consti ...

, and nearby stacks, in the South Atlantic. Its natural

habitat In ecology, the term habitat summarises the array of resources, physical and biotic factors that are present in an area, such as to support the survival and reproduction of a particular species. A species habitat can be seen as the physical ...

s are temperate

shrubland Shrubland, scrubland, scrub, brush, or bush is a plant community characterized by vegetation dominated by shrubs, often also including grasses, herbs, and geophytes. Shrubland may either occur naturally or be the result of human activity. It ...

and subantarctic

grassland A grassland is an area where the vegetation is dominated by grasses (Poaceae). However, sedge (Cyperaceae) and rush ( Juncaceae) can also be found along with variable proportions of legumes, like clover, and other herbs. Grasslands occur natur ...

Status and conservation

It was formerly classified as a

Vulnerable species A vulnerable species is a species which has been categorized by the International Union for Conservation of Nature as being threatened with extinction unless the circumstances that are threatening its survival and reproduction improve. Vulne ...

by the IUCN. But new research has shown that its population has collapsed and it is on the verge of extinction due to the introduced population of house mice (''Mus musculus''), noted for its unusual aggressiveness, competing with the birds for food and eating their

eggs Humans and human ancestors have scavenged and eaten animal eggs for millions of years. Humans in Southeast Asia had domesticated chickens and harvested their eggs for food by 1,500 BCE. The most widely consumed eggs are those of fowl, especial ...

and nestlings. Consequently, it was uplisted to Critically Endangered in 2008.

References

External links