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Eurasian Jackdaw

From Opus

C. m. monedulaPhoto by Macswede Stockholm, Sweden; May 2007
C. m. monedula
Photo by Macswede
Stockholm, Sweden; May 2007
Corvus monedula

Contents

[edit] Identification

  • Black plumage
  • Blue-black metallic sheen on back and shoulders
  • Grey nape and ear patches; paler grey in eastern subspecies
  • Pale blue-green iris
  • Short, pointed bill

Sexes similar. Juveniles have a dark iris at first, and a softer, tinged-brownish plumage without gloss.

C. m. spermologusPhoto by Mahsleb Mistley, Essex, UK; March 2014
C. m. spermologus
Photo by Mahsleb
Mistley, Essex, UK; March 2014

[edit] Similar species

Immature Daurian Jackdaws look similar to this species, but more solidly black on the head.

[edit] Distribution

Found in most of Europe, patchily in northern Africa, the Middle East and western and central Asia.
Accidental vagrant to northeastern United States and Canada.
Abundant in most of its range; populations decreased in most western European countries in the past but have now mostly recovered.

[edit] Taxonomy

[edit] Subspecies

This is a polytypic species, consisting of four subspecies[1]:

  • C. m. monedula:
  • C. m. spermologus:
  • C. m. soemmerringii:
  • C. m. cirtensis:

[edit] Habitat

C. m. spermologusPhoto by MahslebMistley, Essex, May 2009
C. m. spermologus
Photo by Mahsleb
Mistley, Essex, May 2009

Breeds in large holes in trees, or on cliffs, quarries, and buildings, also parks with open woodlands. Winters in open farmland.

[edit] Behaviour

They can form large winter roosts, often along with Rooks.

[edit] Diet

The diet includes insects, amphibians, rodents, seeds, fruits, berries, reptiles, eggs and young birds.

[edit] Breeding

Breeding season starts in late April. Pairs stay together for several years. Usually several pairs are nesting in close proximity on rooftop chimneys, in caves and quarries. The nests are untidy stick structures. They will use long nest boxes. Lays 3-8 (average 4) eggs.

[edit] Vocalisation

Call: a ringing kyow, also chiak.


Listen in an external program

[edit] References

  1. Clements, J. F., T. S. Schulenberg, M. J. Iliff, B.L. Sullivan, C. L. Wood, and D. Roberson. 2012. The eBird/Clements Checklist of Birds of the World. 6th ed., with updates to October 2012. Ithaca: Cornell Univ. Press. ISBN 978-0801445019. Spreadsheet available at http://www.birds.cornell.edu/clementschecklist/downloadable-clements-checklist
  2. Del Hoyo, J, A Elliott, and D Christie, eds. 2009. Handbook of the Birds of the World. Volume 14: Bush-shrikes to Old World Sparrows. Barcelona: Lynx Edicions. ISBN 978-8496553507
  3. BF Member observations
  4. Whatbird

[edit] External Links



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