Geospiza difficilis

Life-forms

Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Megaclassis: Osteichthyes
Cladus: Sarcopterygii
Cladus: Rhipidistia
Cladus: Tetrapodomorpha
Cladus: Eotetrapodiformes
Cladus: Elpistostegalia
Superclassis: Tetrapoda
Cladus: Reptiliomorpha
Cladus: Amniota
Classis: Reptilia
Cladus: Eureptilia
Cladus: Romeriida
Subclassis: Diapsida
Cladus: Sauria
Infraclassis: Archosauromorpha
Cladus: Crurotarsi
Divisio: Archosauria
Cladus: Avemetatarsalia
Cladus: Ornithodira
Subtaxon: Dinosauromorpha
Cladus: Dinosauriformes
Cladus: Dracohors
Cladus: Dinosauria
Cladus: Saurischia
Cladus: Eusaurischia
Subordo: Theropoda
Cladus: Neotheropoda
Cladus: Averostra
Cladus: Tetanurae
Cladus: Avetheropoda
Cladus: Coelurosauria
Cladus: Tyrannoraptora
Cladus: Maniraptoromorpha
Cladus: Maniraptoriformes
Cladus: Maniraptora
Cladus: Pennaraptora
Cladus: Paraves
Cladus: Eumaniraptora
Cladus: Avialae
Infraclassis: Aves
Cladus: Avebrevicauda
Cladus: Pygostylia
Cladus: Ornithothoraces
Cladus: Ornithuromorpha
Cladus: Carinatae
Parvclassis: Neornithes
Cohors: Neognathae
Cladus: Neoaves
Cladus: Telluraves
Cladus: Australaves
Ordo: Passeriformes
Subordo: Passeri
Infraordo: Passerida
Superfamilia: Passeroidea

Familia: Thraupidae
Genus: Geospiza
Species: Geospiza difficilis
Name

Geospiza difficilis Sharpe, 1888

Type locality: Pinta Island (former Abingdon), Galapagos Islands, Ecuador.

References
Primary references

Sharpe, R.B. 1888. Catalogue of the Passeriformes or Perching Birds, in the Collection of the British Museum. Fringilliformes: Part III. Containing the Family Fringillidae. Catalogue of the birds in the British Museum. 12: i–xv; 1–871; pl. I–XVI. London: Taylor & Francis. BHL DOI: 10.5962/bhl.title.8233Reference page. Original description p. 12 BHL

Additional references

Lamichhaney, S., Berglund, J., Sällman Almén, M., Maqbool, K., Grabherr, M., Martinez-Barrio, A., Promerová, M., Rubin, C.J., Wang, C., Zamani, N., Grant, B.R., Grant, P.R., Webster, M.T. & Andersson, L. 2015. Evolution of Darwin’s finches and their beaks revealed by genome sequencing. Nature 518: 371–375. DOI: 10.1038/nature14181 Full article (PDF) Reference page.

Links

IUCN: Geospiza difficilis (Least Concern)

Vernacular names
български: Остроклюна земна чинка
català: Pinsà de les Galápagos de bec esmolat
čeština: Pěnkavka ostrozobá
Cymraeg: Pila daear pigfain
Deutsch: Spitzschnabel-Grundfink
English: Sharp-beaked ground finch
español: Pinzón de Darwin picofino
فارسی: سهره زمینی نوک‌تیز
français: Géospize à bec pointu
עברית: פרוש קרקעי חד-מקור
magyar: Hegyescsőrű földipinty
日本語: ハシボソガラパゴスフィンチ
Nederlands: Spitssnavelgrondvink
русский: Остроклювый земляной вьюрок
svenska: spetsnäbbad darwinfink

The sharp-beaked ground finch (Geospiza difficilis) is a species of bird in the Darwin's finch group of the tanager family Thraupidae. It is classified as a least-concern species by the International Union for Conservation of Nature and it is native to the Galápagos Islands in Ecuador.[1] It has a mass of around 20 grams (0.71 oz) and the males have black plumage, while females have streaked brown plumage.[2] This finch was described by Richard Bowdler Sharpe in 1888.[3]

This relatively small, slender-billed finch is endemic to the Galápagos Islands, where it is found on Fernandina, Santiago, Pinta, Genovesa, Darwin, and Wolf Islands.[2] On the first three islands, it breeds in the humid highlands and disperses afterwards, but on the remaining smaller and lower islands the sharp-beaked ground finch is found in the arid zone year-round. Due to habitat destruction its range has decreased. It was formerly also present in the highlands of several other islands, and it is possible it still occurs on Isabela.[2]

Both the vampire ground finch and the Genovesa ground finch were considered subspecies. The International Ornithologists' Union have split them, while other taxonomic authorities still consider them conspecific.
References

BirdLife International (2017) [amended version of 2016 assessment]. "Geospiza difficilis". IUCN Red List of Threatened Species. 2017: e.T103815127A119460685. doi:10.2305/IUCN.UK.2017-3.RLTS.T103815127A119460685.en. Retrieved 11 November 2021.
Sharp-beaked ground finch media from ARKive
"Geospiza difficilis". Avibase. Retrieved 3 August 2015.