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Redwing

From Opus

Turdus iliacus

Contents

[edit] Identification

Length 20-24 cm (7¾-9½ in), weight 46-80 g
Adult: olive-brown upperparts and marked light supercilium. Underparts are paler but with a spotted breast (which are arranged in vertical lines) and chestnut flanks and underwing. Dark brown bill and yellowy-brown legs.
Juvenile: similar, but also streaked above.

[edit] Similar Species

Song Thrush, which lacks the eyestripe and Fieldfare, which has a grey head. In poor light, or distant views could be confused with Dusky Thrush or Eye-browed Thrush.

[edit] Distribution

Photo by IanFCowpen Bewley Woodland Park, Billingham, Cleveland, UK December 2008
Photo by IanF
Cowpen Bewley Woodland Park, Billingham, Cleveland, UK December 2008

Breeds in Iceland, northern Scotland (rare), Scandinavia, eastern Poland, the Baltic States, Belarus, and across most of Russia east to central Magadan Oblast in eastern Siberia.
Winter visitor to Britain, continental Europe, the Mediterranean region, and east to northern Iran. A casual vagrant to northeastern North America.

[edit] Taxonomy

Relationships unclear; a genetic study rather surprisingly suggested it is not related to other European and Asian thrushes, instead being closer to a group of American thrushes including T. migratorius[1].

[edit] Subspecies

There are two subspecies[2]:

  • T. i. iliacus:
  • T. i. coburni:

[edit] Habitat

Winters in open countryside, hedges, orchards and open, grassy fields.

[edit] Behaviour

Breeds in mixed conifer and birch forests. In the wintering grounds, it feeds on berries in trees, and on invertebrates (earthworms, etc.) in moist grassland. It typically forms loose flocks mixed with Fieldfares and Common Starlings, and to a lesser extent with Song and Mistle Thrushes. Vagrants in North America usually associate with flocks of American Robins.

[edit] Flight

Fast and rather like a Common Starling, but with more rounded wings, and flying in looser flocks. Mainly migrates at night.

[edit] Diet

Its diet includes berries and worms.

[edit] Breeding

Nests in tree stumps, in trees or bushes, or on the ground. Often assocated with Fieldfare colonies.

[edit] Vocalisation

Call: a thin "see-ip" or "seeze".
Song: subsong (recording, below) a medley of whistling, often heard from flocks in late winter; territorial song louder and more stereotyped.


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[edit] References

  1. Voelker, G. et al. (2007). Molecular systematics of a speciose, cosmopolitan songbird genus: defining the limits of and relationships among the Turdus thrushes. Mol Phylogenet Evol. 42: 422-434.
  2. Clements, J. F., T. S. Schulenberg, M. J. Iliff, D. Roberson, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2016. The eBird/Clements checklist of birds of the world: v2016, with updates to August 2016. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/
  3. Birds of Britain
  4. Collins Pocket Guide to British Birds 1966
  5. Collins Field Guide 5th Edition

[edit] External Links


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