The Full Wiki

Redwing: Map

  
  
  

Wikipedia article:

Map showing all locations mentioned on Wikipedia article:



The Redwing (Turdus iliacus) is a bird in the thrush family Turdidae, native to Europe and Asia, slightly smaller than the related Song Thrush.

Taxonomy

This species was first described by Linnaeus in his Systema naturae in 1758 under its current scientific name.

The English name derives from the bird's red underwing. It is not closely related to the Red-winged Blackbird, a North American species sometimes nicknamed "redwing", which is an icterid, not a thrush. The binomial name derives from the Latin words Turdus, "thrush", and ile "flank".

The Redwing has two subspecies:
  • T. i. iliacus, the nominate subspecies described by Linnaeus, which breeds in mainland Eurasia.
  • T. i. coburni described by Richard Bowdler Sharpe in 1901, which breeds in Icelandmarker and the Faroe Islandsmarker and winters from western Scotland and Irelandmarker south to northern Spainmarker. It is darker overall, and marginally larger than the nominate form.


Description

It is 20–24 cm long with a wingspan of 33–34.5 cm and a weight of 50–75 g. The sexes are similar, with plain brown backs and with dark brown spots on the white underparts. The most striking identification features are the red flanks and underwing, and the creamy white stripe above the eye.

The male has a varied short song, and a whistling flight call.

Distribution and habitat

Head of T. i. coburni in Iceland
It breeds in northern regions of Europe and Asia, from Icelandmarker south to northernmost Scotlandmarker, and east through Scandinavia, the Baltic States, northern Polandmarker and Belarusmarker, and through most of Russiamarker to about 165°E in Chukotka Autonomous Okrugmarker. In recent years it has expanded its range slightly, both in eastern Europe where it now breeds south into northern Ukrainemarker, and in southern Greenlandmarker, where the Qaqortoqmarker area was colonised in 1990–1991.

It is often replaced by the related Ring Ouzel in areas of higher altitude.

It is migratory, wintering in western, central and southern Europe, northwest Africa, and southwest Asia east to northern Iranmarker. Birds in some parts of the west of the breeding range (particularly southwestern Norwaymarker) may be resident, not migrating at all, while those in the far east of the range migrate at least 6,500–7,000 km to reach their wintering grounds.

There are two records of vagrants from the northeast coast of North America.

Ecology

Redwings often construct their nests on the ground.


Migrating and wintering birds often form loose flocks of ten to 200 or more birds, often feeding together with Fieldfares, Common Blackbirds, and Starlings, sometimes also with Mistle Thrushes, Song Thrushes, and Ring Ouzels. Unlike the Song Thrush, the more nomadic Redwing, does not tend to return regularly to the same wintering areas.

Breeding

It breeds in conifer and birch forest and tundra. Redwings nest in shrubs or on the ground, laying four to six eggs in a neat nest. The eggs are typically 2.6 x 1.9 centimetres in size and weigh 4.6 grammes, of which 5% is shell, and hatch after 12–13 days. The chicks fledge at 12–15 days, but the young remain dependent on their parents for a further 14 days.

A Russian study of blood parasites showed that all the Fieldfares, Redwings and Song Thrushes sampled carried haematozoans, particularly Haemoproteus and Trypanosoma.

Feeding

It is omnivorous, eating a wide range of insects and earthworms all year, supplemented by berries in autumn and winter, particularly of rowan Sorbus aucuparia and hawthorn Crataegus monogyna.

Status

The Redwing has an extensive range, estimated at 10 million square kilometres (3.8 million square miles), and a large population, including an estimated 31 to 42 million individuals in Europe alone. The species is not believed to approach the thresholds for the population decline criterion of the IUCN Red List (i.e., declining more than 30% in ten years or three generations), and is therefore evaluated as Least Concern. Numbers can be adversely affected by severe winters, which may cause heavy mortality, and cold wet summers, which reduce breeding success.

References

  1. Snow, D. W. & Perrins, C. M. (1998). The Birds of the Western Palearctic Concise Edition. OUP ISBN 0-19-854099-X.
  2. del Hoyo, J., Elliott, A., & Christie, D., eds. (2005). Handbook of the Birds of the World Vol. 10. Lynx Edicions, Barcelona ISBN 84-87334-72-5.
  3. Clement, P., & Hathway, R. (2000). Thrushes Helm Identification Guides, London ISBN 0-7136-3940-7.
  4. p1215–1218


External links




Embed code:






Got something to say? Make a comment.
Your name
Your email address
Message