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Blackstart

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Blackstart
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Passeriformes
Family: Muscicapidae
Genus: Oenanthe
Species:
O. melanura
Binomial name
Oenanthe melanura
(Temminck, 1824)
Synonyms
  • Cercomela melanura (Temminck, 1824)
  • Saxicola melanura Temminck, 1824

The blackstart (Oenanthe melanura) is a chat found in desert regions in North Africa, the Middle East and the Arabian Peninsula. It is resident throughout its range.

The blackstart is 14 cm long and is named for its black tail, which is frequently fanned; the rest of its plumage is bluish-grey or grey-brown (North African races being browner, Middle Eastern races bluer). The sexes are similar. The song is a clear melancholy whistle: CHURlee...TRUloo...CHURlee...TRUlur..., with short phrases from the song used as a call.

The habitats of blackstarts are rocky deserts and mountain slopes; they nest in rock crevices lay 3–4 eggs. They feed on insects, taken mainly on the ground. The blackstart is a confident species, unafraid of people.

Taxonomy

The first formal description of the blackstart was by the Dutch zoologist Coenraad Jacob Temminck in 1824 under the binomial name Saxicola melanura.[2][3] The blackstart was included as the type species in the genus Cercomela introduced by Charles Lucien Bonaparte in 1856.[4] Molecular phylogenetic studies published in 2010 and 2012 found that the genus Cercomela was polyphyletic with five species, including the blackstart, phylogenetically nested within the genus Oenanthe.[5][6] As part of a reorganization of the species to create monotypic genera, the blackstart was assigned to the genus Oenanthe.[7][8]

The specific epithet melanura is from the classical Greek melanouros meaning "with a black tail" from melas "black" and oura "tail".[9]

There are 6 subspecies:[8]

  • O. m. melanura (Temminck, 1824) – northeast Egypt to Israel, Jordan and central Saudi Arabia
  • O. m. neumanni (Ripley, 1952) – southwest Saudi Arabia, Yemen and Oman
  • O. m. lypura (Hemprich & Ehrenberg, 1833) – north-central Sudan to Eritrea
  • O. m. aussae (Thesiger & Meynell, 1934) – northeast Ethiopia, Djibouti and north Somalia
  • O. m. airensis (Hartert, 1921) – north Niger to central Sudan
  • O. m. ultima (Bates, 1933) – east Mali and west Niger

The subspecies differ slightly in the colour of their plumage.[10]

Description

The blackstart is around 14 cm (5.5 in) in length with a wingspan of 23–27 cm (9.1–10.6 in) and a weight of around 15 g (0.53 oz). The nominate race O. m. melanura has blueish ash-grey upperparts with darker wings and a black rump and tail. The belly and under-wings are greyish white; the bill and legs are black. The sexes are similar. The North African subspecies O. m. lypura and O. m. airensis are browner than the nominate.[11]

Distribution and habitat

  • In Egypt, the blackstart is common in the Sinai peninsula
  • In Israel the species is primarily found in the Negev Desert, Arava Valley and Dead Sea areas; it is present in areas of the Jordan River valley further north, but is scarcer there.
  • In Jordan, the species is only found in western parts of the country, in areas from the Jordan River valley south through the Dead Sea region to the Arava Valley and Aqaba Mountains.

Breeding

The blackstart is monogamous and pairs remain on their breeding territory throughout the year.[10] The nest is built entirely by the female and can be placed between boulders, in a rock crevice or in a disused burrow.[12][a] The nest is a shallow cup of grass and leaves lined with hair and fine plant material.[11] The female usually places small pebbles around the entrance of the nest. The 3 or 4 pale blue eggs with fine red-brown speckles are laid at daily intervals.[11][12] They measure 19.6 mm × 14.7 mm (0.77 in × 0.58 in) and weigh 2.26 g (0.080 oz).[11] They are incubated by the female and hatch after 13–14 days. The chicks are fed by both parents and fledge after around 14 days. Up to three broods can be raised in a year.[12]

A study conducted in Israel on the west shore of the Dead Sea found that a major cause of nest failure was the predation of the eggs by Golden and Cairo spiny mice.[12]

Notes

  1. ^ Clement 2016 reports that both sexes take part in building the nest.[13]

References

  1. ^ BirdLife International (2016). "Oenanthe melanura". IUCN Red List of Threatened Species. 2016: e.T22710385A94244582. doi:10.2305/IUCN.UK.2016-3.RLTS.T22710385A94244582.en.
  2. ^ Mayr, Ernst; Paynter, Raymond A. Jr, eds. (1960). Check-list of Birds of the World. Vol. 10. Cambridge, Massachusetts: Museum of Comparative Zoology. pp. 101–102.
  3. ^ Temminck, Coenraad Jacob (1838) [1824]. Nouveau recueil de planches coloriées d'oiseaux, pour servir de suite et de complément aux planches enluminées de Buffon (in French). Vol. 3. Paris: F.G. Levrault. Plate 257, Fig. 2. The 5 volumes were originally issued in 102 parts, 1820-1839
  4. ^ Mayr, Ernst; Paynter, Raymond A. Jr, eds. (1960). Check-list of Birds of the World. Vol. 10. Cambridge, Massachusetts: Museum of Comparative Zoology. p. 96.
  5. ^ Outlaw, R.K.; Voelker, G.; Bowie, R.C.K. (2010). "Shall we chat? Evolutionary relationships in the genus Cercomela (Muscicapidae) and its relation to Oenanthe reveals extensive polyphyly among chats distributed in Africa, India and the Palearctic". Molecular Phylogenetics and Evolution. 55 (1): 284–292. Bibcode:2010MolPE..55..284O. doi:10.1016/j.ympev.2009.09.023. PMID 19772925.
  6. ^ Aliabadian, M.; Kaboli, M.; Förschler, M.I.; Nijman, V.; Chamani, A.; Tillier, A.; Prodon, R.; Pasquet, E.; Ericson, P.G.P.; Zuccon, D. (2012). "Convergent evolution of morphological and ecological traits in the open-habitat chat complex (Aves, Muscicapidae: Saxicolinae)". Molecular Phylogenetics and Evolution. 65 (1): 35–45. Bibcode:2012MolPE..65...35A. doi:10.1016/j.ympev.2012.05.011. PMID 22634240.
  7. ^ Sangster, George; Collinson, J. Martin; Crochet, Pierre-André; Knox, Alan G.; Parkin, David T.; Votier, Stephen C. (2013). "Taxonomic recommendations for Western Palearctic birds: ninth report". Ibis. 155 (4): 898–907 [903]. doi:10.1111/ibi.12091.
  8. ^ a b Gill, Frank; Donsker, David, eds. (2016). "Chats, Old World flycatchers". World Bird List Version 7.2. International Ornithologists' Union. Retrieved 3 May 2017.
  9. ^ Jobling, James A. (2010). The Helm Dictionary of Scientific Bird Names. London: Christopher Helm. p. 248. ISBN 978-1-4081-2501-4.
  10. ^ a b Collar, N. (2020). "Blackstart (Oenanthe melanura)". 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. doi:10.2173/bow.blacks1.01. S2CID 216157496. Retrieved 3 May 2017.
  11. ^ a b c d Cramp, Stanley, ed. (1988). "Cercomela melanura Blackstart". Handbook of the birds of Europe the Middle East and North Africa. The Birds of the Western Palearctic. Volume V: Tyrant Flycatchers to Thrushes. Oxford: Oxford University Press. pp. 718–722. ISBN 0-19-857508-4.
  12. ^ a b c d Leader, N.; Yom-Tov, Y. (1998). "The possible function of stone ramparts at the nest entrance of the Blackstart". Animal Behaviour. 56 (1): 207–217. CiteSeerX 10.1.1.519.5678. doi:10.1006/anbe.1998.0766. PMID 9710479. S2CID 19256931.
  13. ^ Clement, Peter (2016). Robins and Chats. Helm Identification Guides. London: Bloomsbury. pp. 629–631. ISBN 978-1-4081-5596-7.

Further reading

Quelle: http://en.wikipedia.org/wiki/Oenanthe_melanura