Geospiza

{{Short description|Genus of birds}}

{{Automatic taxobox

| image = Geospiza fuliginosa 976.jpg

| image_caption = Small ground finch (Geospiza fuliginosa)

| taxon = Geospiza

| authority = Gould, 1837

| type_species = Geospiza magnirostris

| type_species_authority = Gould, 1837

}}

Geospiza is a genus of bird in the tanager family Thraupidae. All species in the genus are endemic to the Galápagos Islands. Together with related genera, they are collectively known as Darwin's finches. Although in the past, they were classified in the bunting and American sparrow family Emberizidae, more recent studies have shown they belong in the tanager family.

Taxonomy and species list

The genus Geospiza was introduced in 1837 by the English ornithologist John Gould with the large ground finch as the type species.{{ cite journal | last=Gould | first=John | author-link=John Gould | year=1837 | title=Remarks on a group of Ground Finches from Mr. Darwin's collection, with characters of new species | journal=Proceedings of the Zoological Society of London | volume=Part 5 | issue=49 | page=4-7 [5] | url=https://www.biodiversitylibrary.org/page/30570890 }}{{ cite book | editor-last=Paynter | editor-first=Raymond A. Jr | year=1970 | title=Check-List of Birds of the World | volume=13 | publisher=Museum of Comparative Zoology | place=Cambridge, Massachusetts | page=160 | url=https://www.biodiversitylibrary.org/page/14483395 }} The genus name derives from the two Ancient Greek words {{wikt-lang|grc|γῆ}} ({{grc-transl|γῆ}}), meaning "earth", and {{wikt-lang|grc|σπίζα}} ({{grc-transl|σπίζα}}), a catch-all term for finch-like birds.{{Cite book |title=Abrégé du dictionnaire grec français |last=Bailly |first=Anatole |date=1981-01-01 |publisher=Hachette |isbn=978-2010035289 |location=Paris |oclc=461974285 }}{{Cite web |url=http://www.tabularium.be/bailly/ |title=Greek-french dictionary online |last=Bailly |first=Anatole |date= |website=www.tabularium.be |publisher= |access-date=January 8, 2019}} The member of the genus form part of a group collectively known as Darwin's finches.{{Cite journal | last1=Sato | first1=A. | last2=Tichy | first2=H. | last3=O'hUigin | first3=C. | last4=Grant | first4=P.R. | last5=Grant | first5=B.R. | last6=Klein | first6=J. | date=2001 | title=On the origin of Darwin's Finches | journal=Molecular Biology and Evolution | volume=18 | issue=3 | pages=299–311 | doi=10.1093/oxfordjournals.molbev.a003806 | pmid=11230531 | doi-access=free }} Although traditionally placed with the buntings and New World sparrows in the family Emberizidae, molecular phylogenetic studies have shown that Darwin's finches are members of the subfamily Coerebinae within the tanager family Thraupidae.{{cite journal| last1=Burns | first1=K.J. | last2=Shultz | first2=A.J. | last3=Title | first3=P.O. | last4=Mason | first4=N.A. | last5=Barker | first5=F.K. | last6=Klicka | first6=J. | last7=Lanyon | first7=S.M. | last8=Lovette | first8=I.J. | year=2014 | title=Phylogenetics and diversification of tanagers (Passeriformes: Thraupidae), the largest radiation of Neotropical songbirds | journal=Molecular Phylogenetics and Evolution| volume=75| pages=41–77 | doi=10.1016/j.ympev.2014.02.006 | pmid=24583021 | bibcode=2014MolPE..75...41B | url=https://digitalcommons.lsu.edu/cgi/viewcontent.cgi?article=3613&context=biosci_pubs }}

The genus contains the following nine species.{{cite web| editor1-last=Gill | editor1-first=Frank | editor1-link=Frank Gill (ornithologist) | editor2-last=Donsker | editor2-first=David | editor3-last=Rasmussen | editor3-first=Pamela | editor3-link=Pamela Rasmussen | date=July 2020 | title=Tanagers and allies | work=IOC World Bird List Version 10.2 | url=https://www.worldbirdnames.org/bow/tanagers/ | publisher=International Ornithologists' Union | accessdate=16 October 2020 }}

class="wikitable"
ImageScientific nameCommon NameDistribution
120pxGeospiza fuliginosaSmall ground finchGalápagos Islands
120pxGeospiza difficilisSharp-beaked ground finchwestern/central Galápagos Islands
120pxGeospiza acutirostrisGenovesa ground finchGenovesa Island
120pxGeospiza septentrionalisVampire ground finchDarwin and Wolf Island
120pxGeospiza conirostrisEspañola cactus finchEspañola Island
120pxGeospiza propinquaGenovesa cactus finchGenovesa Island
120pxGeospiza magnirostrisLarge ground finchGalápagos Islands
120pxGeospiza scandensCommon cactus finchGalápagos Islands
120pxGeospiza fortisMedium ground finchGalápagos Islands

= Hybrids =

A purported hybrid species (informally nicknamed "Big Bird") endemic to Daphne Major and formed almost four decades prior by hybridization between a vagrant Geospiza conirostris and a Geospiza fortis was also reported in 2017, though it has yet to be formally described.{{Cite journal|last1=Lamichhaney|first1=Sangeet|last2=Han|first2=Fan|last3=Webster|first3=Matthew T.|last4=Andersson|first4=Leif|last5=Grant|first5=B. Rosemary|last6=Grant|first6=Peter R.|date=2017-11-23|title=Rapid hybrid speciation in Darwin's finches|journal=Science|volume=359|issue=6372|language=en|pages=224–228|doi=10.1126/science.aao4593|issn=0036-8075|pmid=29170277|doi-access=free}}

References

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