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North African ostrich

From Wikipedia, the free encyclopedia
Subspecies of bird

North African ostrich[1]
Male
Female
Both photographed atYotvata Hai-Bar Nature Reserve,Israel
Scientific classificationEdit this classification
Kingdom:Animalia
Phylum:Chordata
Class:Aves
Infraclass:Palaeognathae
Order:Struthioniformes
Family:Struthionidae
Genus:Struthio
Species:
Subspecies:
S. c. camelus
Trinomial name
Struthio camelus camelus
Struthio camelus distribution map
  North African subspecies (S. c. camelus)

TheNorth African ostrich,[1]red-necked ostrich, orBarbary ostrich (Struthio camelus camelus) is the nominatesubspecies of thecommon ostrich fromWest andNorth Africa. It has the largest average size among the subspecies of ostriches, making it thelargest living bird.

Evolutionary history

[edit]

In the 1990s,mtDNA analyses control regionhaplotypes revealed that theArabian ostrich from Western Asia is closely related to the North African ostrich.[2]

In 2017, theBirbal Sahni Institute of Palaeobotany discovered that common ostriches used to live inIndia about 25,000 years ago. DNA research on eleven fossilised eggshells from eight archaeological sites in the states ofRajasthan,Gujarat andMadhya Pradesh found 92% genetic similarity between the eggshells and the North African ostrich.[3][4]

Description

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The North African ostrich is the largest subspecies ofS. camelus, at 2.74 m (9 ft 0 in) in height and up to 154 kg (340 lb) in weight. The neck is pinkish-red, the plumage of males is black and white, and the plumage of females is gray.[5]

Habitat and distribution

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The North African ostrich was widespread from western to northeastern Africa. It used to range fromEthiopia andSudan in the east throughout theSahel toSenegal andMauritania in the west, and north toEgypt and southernMorocco. It has now disappeared from large parts of this range and it only remains in 6 of the 18 countries where it originally occurred.[6] This subspecies may also have occurred in theSinai Peninsula, whereArabian ostriches once lived. North African ostriches can be found in open fields and thesavannahs, especially in the Sahel of Africa.[7]

Conservation status

[edit]

The North African ostrich had dramatically declined to the point where it is now included onCITES Appendix I and some treat it asCritically Endangered.[6] The North African ostrich is part of a project by theSahara Conservation Fund (SCF) with the aim of saving the subspecies from extinction and restore its populations in its former ranges in theSahara and theSahel.[6]

Reintroduction projects

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A running North African ostrich atWaza National Park, Cameroon.

Africa

[edit]

The North African ostrich was the most widespread subspecies of ostrich. It formerly had an extensive range but is now thought to live in fragmented pockets inCameroon,Chad,Central African Republic and Senegal, whilst extinct in most of its range in northern Africa. Reintroduction projects for the ostriches have begun, especially in northernSahara, where North African ostriches had been extinct for 50 years. Ostriches were imported from Chad and reintroduced toSouss-Massa National Park in Morocco.[8]

InTunisia, North African ostriches were once common in the southern region of the country. The subspecies had been extirpated since 1887. In 2014, North African ostriches were finally returned to Tunisia after 127 years of being extinct. The birds were first reintroduced toDghoumès National Park. They were then reintroduced toSidi Toui National Park, and then toOrbata Faunal Reserve.[9][10]

It is planned that the red-necked ostrich will also recover in other countries from western to northeastern Africa, such asNiger andNigeria.[11]

Asia

[edit]

The North African ostrich is the closest relative to the extinctArabian ostrich from Western Asia. Following analyses ofmtDNA control regionhaplotypes that confirmed the close relationship of the Arabian and the North African subspecies, the North African subspecies was considered suitable for introduction into areas where the Arabian subspecies used to live.[2]

In 1988–89, the ostriches, originally taken fromSudan, were introduced to National Wildlife Research Center inSaudi Arabia. Areintroduction project using the North African ostriches was set up atMahazat as-Sayd Protected Area in 1994. Currently, it is estimated that 90 to 100 individuals are living within the reserve. It was proposed that the North African ostriches should also be reintroduced to Al-Khunfah Protected Area.[12]

It also has been reintroduced in theYotvata Hai-Bar Nature Reserve inIsrael as well and some will eventually be released in open fields of theNegev desert.[13] However, the reintroduction failed, as the reintroduced ostriches vanished. It is thought that the vanished species may have left Israel for Egypt. The reintroduction project for the ostriches was on hiatus, but the authority might try again in the future. It is hoped thatJordan and Egypt would collaborate with Israel to ensure that the ostriches can live in a broader range.[14]

In captivity

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North African ostrich at thePaignton Zoo, United Kingdom

North African ostriches in captivity are mostly breeding populations in European and Middle Eastern zoos, such asHanover,Hamburg, andPaignton Zoo.

References

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Wikimedia Commons has media related toStruthio camelus camelus.
Wikispecies has information related toStruthio camelus camelus.
  1. ^ab"Ostrich". Sahara Conservation Fund. Retrieved4 January 2016.
  2. ^abFreitag, Stephanie & Robinson, Terence J. (1993)."Phylogeographic patterns in mitochondrial DNA of the Ostrich (Struthio camelus)"(PDF).The Auk.110 (3):614–622.doi:10.2307/4088425.JSTOR 4088425.
  3. ^R. Prasad (10 March 2017)."Ostriches lived in India once".The Hindu. Retrieved11 May 2017.
  4. ^"Ostriches lived in India 25,000 yrs ago: BSIP study".The Times of India. 10 March 2017. Retrieved11 May 2017.
  5. ^Clive Roots (2006).Flightless Birds. Bloomsbury Academic. p. 26.ISBN 9780313335457. Retrieved4 May 2015.
  6. ^abcSahara Conservation Fund:"Ostrich Conservation, Niger". Archived fromthe original on August 20, 2010. Retrieved2017-03-29.
  7. ^Thiollay, Jean-Marc (December 2006)."Severe decline of large birds in the Northern Sahel of West Africa: a long-term assessment".Bird Conservation International.16 (4):353–365.doi:10.1017/S0959270906000487. Retrieved4 May 2015.
  8. ^"Red-necked Ostrich reintroduced to the Sahara after 50 years". Wordpress. 24 May 2013. Retrieved17 October 2016.
  9. ^"The return of the long lost North-African ostrich to Tunisia". Marwell Wildlife. 21 March 2015. Retrieved16 December 2015.
  10. ^Tim Woodfine, Marie Petretto; Tanya Langenhorst (April 2015).Reintroduction and conservation of North African / red-necked ostrich,Struthio camelus camelus, to protected areas in southern Tunisia(PDF). Marwell Wildlife. Retrieved4 January 2016.
  11. ^"NORTH AFRICAN OSTRICH RECOVERY IN NIGER". Woodland Park Zoo. Retrieved4 January 2016.
  12. ^M. Zafar-ul Islam; Ahmed Boug; Mohammed Shobrak (2008). "Conservation Status of reintroduced red-necked ostrich in Mahazat as-Sayd, Saudi Arabia". In Pritpal S. Soorae (ed.).Global Re-introduction Perspectives: Re-introduction Case-studies from Around the Globe. IUCN/SSC Re-introduction Specialist Group.ISBN 978-2831711133.
  13. ^Robinson, Terence J. & Matthee, Conrad A. (1999). "Molecular genetic relationships of the extinct ostrich,Struthio camelus syriacus: consequences for ostrich introductions into Saudi Arabia".Animal Conservation.2 (3):165–171.Bibcode:1999AnCon...2..165R.doi:10.1111/j.1469-1795.1999.tb00062.x.S2CID 85959044.
  14. ^Zafrir Rinat (25 December 2007)."The Bitter Fate of Ostriches in the Wild".Haaretz. Retrieved28 May 2022.
Struthio camelus camelus
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