Orange-flanked bush-robin (Tarsiger cyanurus)

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Male orange-flanked bush-robin perched
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Orange-flanked bush-robin fact file

Orange-flanked bush-robin description

KingdomAnimalia
PhylumChordata
ClassAves
OrderPasseriformes
FamilyMuscicapidae
GenusTarsiger (1)

The most distinctive feature of the orange-flanked bush-robin (Tarsiger cyanurus) is the vibrant plumage of the male. In addition to orange flanks, which give the bird its common name, the male has deep blue upperparts, with a bright blue head, shoulder, rump and tail. The duller female has olive-brown upperparts, but is similar to the male in its orange flanks and blue rump and tail (2). In both sexes, the throat is white (3) and the bill and legs are black (2). Juvenile males resemble females, having not yet developed the distinctive blue plumage (2).

The orange-flanked bush-robin is a shy bird that is often well hidden, but can frequently be heard singing from high up in the top of a tree (3). The male’s song is comprised of a short, rolling ‘tree trr-tretritt’ and a rising, melodic ‘whew-wee-whew-wee’. These calls are made early in the breeding season, and the female responds with a weaker and shorter call (2). Shorter and harder calls are used as an alarm when the orange-flanked bush-robin is agitated (3).

Two subspecies of the orange-flanked bush-robin are recognised: Tarsiger cyanurus cyanurus and Tarsiger cyanurus rufilatus. The latter is slightly larger, with darker plumage and a simpler and softer song (2).

Also known as
Red-flanked bluetail.
Size
Length: 13 - 15 cm (2)
Weight
10 - 18 g (2)
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Orange-flanked bush-robin biology

The diet of the orange-flanked bush-robin comprises primarily insects, such as beetles, caterpillars, ants and wasps, which it forages for in the undergrowth or may snatch from the air in flight. It will also eat other invertebrates, such as spiders (2), and feeds on fruits and seeds during the non-breeding season (2) (5).

During the breeding season, the male orange-flanked bush-robin arrives at the breeding grounds first (6), and starts defending a territory of roughly fifty metres in radius, mainly through song (7). With the arrival of the females soon after, breeding pairs will form, each occupying a single territory. However, the females may also mate with other males as well as their ‘partner’ (6).

Unlike many birds, the orange-flanked bush-robin nests on the ground rather than in trees. The female constructs a cup-shaped nest from twigs and moss, lined with feathers and grass, which is placed among roots or in a cavity in a tree stump or rotten log (2) (5). Three to seven eggs are laid, which are white and may have a few reddish speckles. The female incubates the eggs for 15 days, and the fledglings will spend a further 15 days in the nest after they have hatched (2).

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Orange-flanked bush-robin range

The orange-flanked bush-robin has an extremely wide distribution, occurring predominantly in Asia. T. c. cyanurus is found from Finland and north-west Russia, across Siberia, to China and Japan (2), while T. c. rufilatus is found throughout the Himalayas (2) at 2,400 to 4,600 metres above sea level (4).

The orange-flanked bush-robin migrates south for winter, to southern China and Southeast Asia (5).

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Orange-flanked bush-robin habitat

Throughout its large range, the orange-flanked bush-robin occupies coniferous and birch forests (4) with dense undergrowth (2).

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Orange-flanked bush-robin status

The orange-flanked bush-robin is classified as Least Concern (LC) on the IUCN Red List (1).

IUCN Red List species status – Least Concern

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Orange-flanked bush-robin threats

The orange-flanked bush-robin is not currently known to be facing any threats.

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Orange-flanked bush-robin conservation

There are no known specific conservation measures currently in place for the orange-flanked bush-robin.

Environment Agency - Abu Dhabi is a principal sponsor of ARKive. EAD is working to protect and conserve the environment as well as promoting sustainable development in the Emirate of Abu Dhabi.
View information on this species at the UNEP World Conservation Monitoring Centre.
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Find out more

Find out more about the orange-flanked bush-robin:

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Authentication

This information is awaiting authentication by a species expert, and will be updated as soon as possible. If you are able to help please contact:
arkive@wildscreen.org.uk

This species information was authored as part of the ARKive and Universities Scheme.
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Glossary

Incubates
Keeps eggs warm so that development is possible.
Invertebrates
Animals with no backbone, such as insects, crustaceans, worms and spiders.
Subspecies
A population usually restricted to a geographical area that differs from other populations of the same species, but not to the extent of being classified as a separate species.
Territory
An area occupied and defended by an animal, a pair of animals or a group.
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References

  1. IUCN Red List (November, 2010)
    http://www.iucnredlist.org/
  2. del Hoyo, J., Elliot, A. and Christie, D.A. (2005) Handbook of the Birds of the World. Volume 10: Cuckoo-shrikes to Thrushes. Lynx Edicions, Barcelona.
  3. Delin, H. and Svensson, L. (2009) Philip’s Guide to Birds of Britain and Europe. Philips, London.
  4. Sibley, C.G. and Monroe Jr., B.L. (1990) Distribution and Taxonomy of Birds of the World. Yale University Press, New Haven and London.
  5. Wang, Y., Chang, J., Moore, F.R., Su, L., Cui, L. and Yang, X. (2006) Stopover ecology of Red-flanked Bush Robin (Tarsiger cyanurus) at Maoershan, Northeast China. Acta Ecologica Sinica, 26(3): 638-646.
  6. Satio, D.S., Morimoto, G., Fukunaga, A. and Ueda, K. (2006) Isolation and characterization of microsatellite markers in red-flanked bushrobin, Tarsinger cyanurus (Aves: Turdidae). Molecular Ecology Notes, 6: 425-427.
  7. Morimoto, G., Yamaguchi, N. and Ueda, K. (2005) Plumage color as a status signal in male-male interaction in the red-flanked bushrobin, Tarsiger cyanurus. Journal of Ethology, 24: 261-266.
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Image credit

Male orange-flanked bush-robin perched  
Male orange-flanked bush-robin perched

© Markus Varesvuo / naturepl.com

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