The red-billed spurfowl (''Pternistis adspersus''), also known as the red-billed francolin, is a species of

bird Birds are a group of warm-blooded vertebrates constituting the class Aves (), characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweigh ...

in the family

Phasianidae The Phasianidae are a family (biology), family of heavy, ground-living birds, which includes pheasants, partridges, junglefowl, chickens, Turkey bird, turkeys, Old World quail, and peafowl. The family includes many of the most popular Game (hunti ...

. It is found in Southern Africa, including

Angola , national_anthem = " Angola Avante"() , image_map = , map_caption = , capital = Luanda , religion = , religion_year = 2020 , religion_ref = , coordina ...

Botswana Botswana (, ), officially the Republic of Botswana ( tn, Lefatshe la Botswana, label=Setswana, ), is a landlocked country in Southern Africa. Botswana is topographically flat, with approximately 70 percent of its territory being the Kalahar ...

Namibia Namibia (, ), officially the Republic of Namibia, is a country in Southern Africa. Its western border is the Atlantic Ocean. It shares land borders with Zambia and Angola to the north, Botswana to the east and South Africa to the south and ea ...

South Africa South Africa, officially the Republic of South Africa (RSA), is the southernmost country in Africa. It is bounded to the south by of coastline that stretch along the South Atlantic and Indian Oceans; to the north by the neighbouring countri ...

Zambia Zambia (), officially the Republic of Zambia, is a landlocked country at the crossroads of Central Africa, Central, Southern Africa, Southern and East Africa, although it is typically referred to as being in Southern Africa at its most cent ...

, and

Zimbabwe Zimbabwe (), officially the Republic of Zimbabwe, is a landlocked country located in Southeast Africa, between the Zambezi and Limpopo Rivers, bordered by South Africa to the south, Botswana to the south-west, Zambia to the north, and Mozam ...

. The species exhibits sexual dimorphism in size. Males are larger, measuring in length and weighing , whereas females measure in length and weigh . The species has barred underparts (in contrast to the related

Natal spurfowl The Natal spurfowl or Natal francolin (''Pternistis natalensis'') is a species of bird in the family Phasianidae. It is found in Botswana, Eswatini, Mozambique, South Africa, Zambia, and Zimbabwe. Taxonomy The Natal spurfowl was described in 18 ...

) and a conspicuous yellow eye-ring.McGowan, P.J.K. & Kirwan, G.M. (2017). Red-billed Francolin (Pternistis adspersus). 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/53412 on 22 May 2017).

Taxonomy

The red-billed spurfowl was described in 1838 by the English naturalist

George Robert Waterhouse George Robert Waterhouse (6 March 1810 – 21 January 1888) was an English natural history, naturalist. He was a keeper at the department of geology and later curator of the Zoological Society of London's museum. Early life George was born ...

from specimens collected by

James Edward Alexander General Sir James Edward Alexander (16 October 1803 – 2 April 1885) was a Scottish traveller, author and soldier in the British Army. Alexander was the driving force behind the placement of Cleopatra's Needle on the Thames Embankment. Bac ...

on his expedition to

Namaqualand Namaqualand (khoekhoe: "Nama-kwa" meaning Nama Khoe people's land) is an arid region of Namibia and South Africa, extending along the west coast over and covering a total area of . It is divided by the lower course of the Orange River into ...

and

Damaraland Damaraland was a name given to the north-central part of what later became Namibia, inhabited by the Damara (people), Damaras. It was bounded roughly by Ovamboland in the north, the Namib Desert in the west, the Kalahari Desert in the east, a ...

. Waterhouse 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 ...

''Francolinus adspersus'' and noted that the specimens had come near the Fish River in what is now Namibia. The specific epithet ''adspersus'' is Latin for "sprinkling". The species is now placed in the

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

Pternistis ''Pternistis'' is a genus of galliform birds formerly classified in the spurfowl group of the partridge subfamily of the pheasant family. They are described as "partridge-francolins" in literature establishing their phylogenetic placement out ...

'' that was introduced by the German naturalist

Johann Georg Wagler Johann Georg Wagler (28 March 1800 – 23 August 1832) was a German herpetologist and ornithologist. Wagler was assistant to Johann Baptist von Spix, and gave lectures in zoology at the Ludwig Maximilian University of Munich after it was moved ...

in 1832. The red-billed spurfowl is considered as

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 ...

: the proposed

subspecies In biological classification, subspecies is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics (morphology), but that can successfully interbreed. Not all species ...

''mesicus'' is not recognised.

References

External links

* (Red-billed spurfowl = ) red-billed francolin
Species text in The Atlas of Southern African BirdsXeno-canto: audio recordings of the red-billed spurfowl

red-billed spurfowl The red-billed spurfowl (''Pternistis adspersus''), also known as the red-billed francolin, is a species of bird in the family Phasianidae. It is found in Southern Africa, including Angola, Botswana, Namibia, South Africa, Zambia, and Zimbabwe. ...

Birds of Southern Africa

Taxonomy articles created by Polbot {{Galliformes-stub