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Hazel Grouse

From Opus

MalePhoto © by Daniele Occhiato. Vaaltavara, Finland, May 2005
Photo © by Daniele Occhiato.
Vaaltavara, Finland, May 2005
Tetrastes bonasia

Bonasa bonasia


[edit] Identification

FemalePhoto © by RBirder.Kandalaksha gulf, Russia
Photo © by RBirder.
Kandalaksha gulf, Russia

35–40 cm (13¾-15¾ in)

  • Grey upperparts
  • Brown wings
  • Chestnut flecked white underparts

Male: a short erectile crest and a white-bordered black throat.
Female: a shorter crest and lacks the black throat

[edit] Distribution

Scandinavia, central and eastern Europe, Russia and Siberia to Japan and northern Korea.

[edit] Taxonomy

Formerly placed in genus Bonasa by some authorities.

[edit] Subspecies

Chick, subspecies bonasiaPhoto © by RoyfinnIisalmi, Finland, June 2018
Chick, subspecies bonasia
Photo © by Royfinn
Iisalmi, Finland, June 2018

Twelve subspecies are recognized[1]:

  • T. b. styriacus: Jura Mountains, Alps, Hungary, Slovakia and southern Poland
  • T. b. rhenanus: North East France, Luxembourg, Belgium and West Germany
  • T. b. rupestris: South Germany, Bohemia and Sudety Mountains
  • T. b. schiebeli: Balkan Peninsula
  • T. b. volgensis: Poland and Ukraine to central European Russia
  • T. b. bonasia: South Scandinavia, Finland and northern European Russia to Ural Mountains
  • T. b. griseonota: North Sweden
  • T. b. sibiricus: Siberia to Altai Mountains, Sayan Mountains and northern Mongolia
  • T. b. kolymensis: Extreme eastern Siberia to Sea of Okhotsk
  • T. b. amurensis: South Amurland and Little Khingan Mountains to northern Korea
  • T. b. yamashinai: Sakhalin (Russia)
  • T. b. vicinitas: Hokkaido (northern Japan)

[edit] Habitat

Dense, damp, mixed coniferous deciduous woodland, preferably with some spruce.

[edit] Behaviour

[edit] Breeding

The clutch consists of 3-6 eggs, which are laid in a ground nest. The female alone incubates the eggs and cares for the chicks.

[edit] Diet

They have a mainly vegetarian diet, supplemented by insects when breeding. During hard winter weather, they eat catkins, bugs and twigs of various trees and shrubs such as alder, birch, hazel and aspen.

[edit] 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
  2. Handbook of the Birds of the World Alive (retrieved Oct 2017)
  3. ZipcodeZoo

[edit] External Links


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