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Difference between revisions of "Dusky Thrush" - BirdForum Opus

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'''Includes Naumann’s Thrush'''
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'''Disambiguation:''' this page is for the split version of Dusky Thrush. Subspecies ''naumanni'' is now found in [[Naumann's Thrush]]
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;[[:Category:Turdus|Turdus]] naumanni
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[[Image:269A0332 Edited-1.jpg|thumb|550px|right|Male<br />Photo &copy; by {{user|letsbefrank|letsbefrank}}<br />Tonboike Park, Kishiwada, [[Japan]], 24 January 2016]]
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[[Image:Eunomus_dusky_thrush_by_Akiko_Hidaka.jpg|thumb|550px|right|Photo by Akiko Hidaka<br />Photographed: Kanto, [[Japan]] <br />This bird belongs to subspecies ''eunomus''.]]
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;[[:Category:Turdus|Turdus]] eunomus
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[[Image:Naumanns_thrush_by_lostinjapan.jpg|thumb|550px|right|Photo by lostinjapan<br />Photographed: Hiroshima City Center, [[Japan]] <br />This bird is a young female of subspecies ''naumanni''.]]
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==Identification==
 +
[[Image:DuskyThrushIMG 1758.jpg|thumb|350px|right|Female or immature male<br />Photo &copy; by {{user|jmorlan|Joseph Morlan}}<br />Niijuku, Tonosho, Katori District, Chiba Prefecture, [[Japan]], 11 February 2019]]<!--Added to gallery:  https://www.birdforum.net/gallery/showphoto.php/photo/625215/-->
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23–25 cm (9-9¾ in)<br />
 +
'''Male'''
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*Dark brown upperside with some black spots and an obvious rufous wing panel and rump
 +
*Obvious pale [[Topography#Heads|supercilium]] and throat
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*[[Topography#Heads|malar]] area pale in male but more contrasting dark and pale in female (not all individuals can be reliably sexed)
 +
*Underside white with dark spots producing a band across upper breast and down flanks
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*Underwing almost entirely buffy-rufous
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'''Females''' are similar but have a less contrasting dull gray back and crown.
 +
====Similar Species====
 +
Will remind a European observer of a [[Redwing]], but is larger, has stronger bill, longer tail, darker crown and [[Topography#Heads|auriculars]], and rufous wing panel, while lacking the reddish flanks.
  
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==Identification==
 
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*Pale brown back and head
 
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*White belly and undertail
 
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*Rufous face, breast, rump and spots on flanks
 
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* ''T. n. eunomus'' - darker brown back and rump; black face, breast, rump and flank spots.
 
 
==Distribution==
 
==Distribution==
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Found in summer in northern [[Asia]], mainly [[Siberia]]; winters to [[Japan]], [[Korea]], southern [[China]] and [[Myanmar]]. Generally, subspecies ''eunomus'' occurs more northerly then ''naumanni''. Both forms have occurred as vagrants in [[Europe]] and [[Britain]].
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Found in summer in northern [[Asia]], mainly [[Siberia]]; winters to [[Japan]], [[Korea]], southern [[China]] and [[Myanmar]]. Generally, [[Dusky Thrush]] occurs more northerly then [[Naumann's Thrush]].
 +
 
 +
Dusky Thrush has occurred as vagrant in [[Europe]] and [[Britain]].
 
==Taxonomy==
 
==Taxonomy==
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Two subspecies are recognized<sup>[[#References|1]]</sup>: ''naumanni'' and ''eunomus''. However, several sources<sup>[[#References|2]]</sup> split these two into full species which would then be Dusky Thrush ''Turdus eunomus'' and Naumann’s Thrush ''Turdus naumanni''.  
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This is a [[Dictionary_M-O#M|monotypic]] species<sup>[[#References|1]]</sup>.
 +
 
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Dusky Thrush has recently been split from [[Naumann’s Thrush]] ''Turdus naumanni''. Hybrids do occur and are not too rare around Beijing<sup>[[#References|3]]</sup>.
 +
 
 
==Habitat==
 
==Habitat==
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Forest and scrub.  
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Breeds in coniferous and broad-leaf forest and scrub.  
 
==Behaviour==
 
==Behaviour==
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It nests in trees; 3-5 eggs are laid.  
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====Breeding====
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They nest in trees at about 5 meters above ground. The clutch consists of 3-5 eggs which are laid in a loose cup nest formed from grass, twigs and moss held together with mud.
 +
====Diet====
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The diet consists of insect larvae, locusts, beetles and seeds.
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====Vocalisation====
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Voice is very similar to [[Naumann's Thrush]]
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==References==
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#{{Ref-Clements6thAug18}}#Knox, A.G. et al. 2008. Taxonomic recommendations for British birds: Fifth report. [http://www3.interscience.wiley.com/cgi-bin/fulltext/121420075/PDFSTART  ''Ibis''], 150, 833–835
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#[http://www.birdforum.net/showthread.php?t=161668&highlight=dusky+thrush%27 Thread in Id Forum]; see especially posts 5 and 6
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#Beaman, M., S. Madge, K.M. Olsen. 1998. ''Fuglene i Europa, Nordafrika og Mellemøsten.'' Copenhagen, Denmark: Gads Forlag, ISBN 87-12-02276-4
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#Collar, N. & de Juana, E. (2019). Dusky Thrush (''Turdus eunomus''). 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 https://www.hbw.com/node/58257 on 27 March 2019).
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#{{Ref-Brazil18}}#Clement, P. & Hathway, R. (2000) ''Thrushes.'' Princeton Univ. Press, Princeton.  
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{{ref}}
  
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The diet includes insects, mosquitoes, earthworms and berries.
 
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==References==
 
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# Clements, James F. 2007. ''The Clements Checklist of Birds of the World''. 6th ed., with updates to October 2007. Ithaca: Cornell University Press. ISBN 9780801445019
 
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# Knox, A.G. et al. 2008. Taxonomic recommendations for British birds: Fifth report. [http://www3.interscience.wiley.com/cgi-bin/fulltext/121420075/PDFSTART  ''Ibis''], 150, 833–835
 
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#Wikipedia
 
 
==External Links==
 
==External Links==
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{{GSearch|Turdus+naumanni}}
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{{GSearch|"Turdus eunomus" {{!}} "Dusky Thrush"}}
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{{GS-checked}}1
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<br />
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<br />
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[[Category:Birds]][[Category:Turdus]]
 
[[Category:Birds]][[Category:Turdus]]

Latest revision as of 13:58, 15 June 2023

Disambiguation: this page is for the split version of Dusky Thrush. Subspecies naumanni is now found in Naumann's Thrush

Male
Photo © by letsbefrank
Tonboike Park, Kishiwada, Japan, 24 January 2016
Turdus eunomus

Identification

Female or immature male
Photo © by Joseph Morlan
Niijuku, Tonosho, Katori District, Chiba Prefecture, Japan, 11 February 2019

23–25 cm (9-9¾ in)
Male

  • Dark brown upperside with some black spots and an obvious rufous wing panel and rump
  • Obvious pale supercilium and throat
  • malar area pale in male but more contrasting dark and pale in female (not all individuals can be reliably sexed)
  • Underside white with dark spots producing a band across upper breast and down flanks
  • Underwing almost entirely buffy-rufous

Females are similar but have a less contrasting dull gray back and crown.

Similar Species

Will remind a European observer of a Redwing, but is larger, has stronger bill, longer tail, darker crown and auriculars, and rufous wing panel, while lacking the reddish flanks.

Distribution

Found in summer in northern Asia, mainly Siberia; winters to Japan, Korea, southern China and Myanmar. Generally, Dusky Thrush occurs more northerly then Naumann's Thrush.

Dusky Thrush has occurred as vagrant in Europe and Britain.

Taxonomy

This is a monotypic species1.

Dusky Thrush has recently been split from Naumann’s Thrush Turdus naumanni. Hybrids do occur and are not too rare around Beijing3.

Habitat

Breeds in coniferous and broad-leaf forest and scrub.

Behaviour

Breeding

They nest in trees at about 5 meters above ground. The clutch consists of 3-5 eggs which are laid in a loose cup nest formed from grass, twigs and moss held together with mud.

Diet

The diet consists of insect larvae, locusts, beetles and seeds.

Vocalisation

Voice is very similar to Naumann's Thrush

References

  1. Clements, J. F., T. S. Schulenberg, M. J. Iliff, D. Roberson, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2018. The eBird/Clements checklist of birds of the world: v2018. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/
  2. Knox, A.G. et al. 2008. Taxonomic recommendations for British birds: Fifth report. Ibis, 150, 833–835
  3. Thread in Id Forum; see especially posts 5 and 6
  4. Beaman, M., S. Madge, K.M. Olsen. 1998. Fuglene i Europa, Nordafrika og Mellemøsten. Copenhagen, Denmark: Gads Forlag, ISBN 87-12-02276-4
  5. Collar, N. & de Juana, E. (2019). Dusky Thrush (Turdus eunomus). 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 https://www.hbw.com/node/58257 on 27 March 2019).
  6. Brazil, M. (2018). Birds of Japan. Helm, London. ISBN 978-1-4729-1386-9
  7. Clement, P. & Hathway, R. (2000) Thrushes. Princeton Univ. Press, Princeton.

Recommended Citation

External Links

GSearch checked for 2020 platform.1

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