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Dwarf Jay - BirdForum Opus

Photo by Peter R. Bono
Forest above Las Guacamayas, Oaxaca, Mexico, July 2009
Cyanolyca nanus



  • Slate blue body
  • Black mask
  • Narrow lavender supercilium
  • Lavender throat
  • Dark red-brown eye
  • Black bill and legs

Sexes similar, females are slightly duller than males. Juveniles are duller and have a greenish-blue forehead and supercilium and a greyish-blue throat.


Endemic to the mountains of Veracruz and adjacent Oaxaca and Puebla in eastern Mexico.
A restricted-range species with a declining population due to habitat loss.


This is a monotypic species[1].

The scientific name is also spelled nana.


Humid pine-oak-fir forest. Occurs between 1400m to 3200m.


Usually seen in pairs, sometimes in small flocks associating with other birds like Grey-barred Wren.


Feeds on arthropods.


Breeding season from March to July. A solitary nester. The nest is a bulky compact mass made of mosses, lichens and some twigs. It's placed 3 - 15m above the ground in an oak. Lays 2 - 3 eggs.
A sedentary species.


  1. Clements, JF. 2011. The Clements Checklist of Birds of the World. 6th ed., with updates to August 2011. 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

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