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Bicolored Antvireo - BirdForum Opus

Photo © by C B Allen
Camino Montezuma (Los Cajones) Risaralda, Colombia, 9th November 2023
Dysithamnus occidentalis


13·5 cm (5¼ in)

  • Blackish-grey plumage
  • Lighter underparts
  • White interscapular patch
  • White-spotted black greater and median wing-coverts


South America: found in Colombia and Ecuador


Photo © by Daan van der hoeven
Merazonia Wildlife Refuge, Mera, Pastaza, Ecuador, 24 September 2019


There are 2 subspecies[1]:

  • D. o. occidentalis:
  • Pacific slope of Andes of south-western Colombia and northern Ecuador (Carchi)
  • D. o. punctitectus:
  • Eastern slope of Andes of Ecuador (western Napo and Morona-Santiago)


Understorey of montane evergreen forests at heights between 900 to 2200 m.



Their diet consists of insects and arthropods, including caterpillars and moths.


They construct an open cup-shaped nest from small rootlets. Both adults care for the young.


  1. Clements, J. F., T. S. Schulenberg, M. J. Iliff, S. M. Billerman, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2019. The eBird/Clements Checklist of Birds of the World: v2019. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/
  2. Avibase
  3. BirdLife International
  4. Zimmer, K. and M.L. Isler (2020). Bicolored Antvireo (Dysithamnus occidentalis), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.bicant4.01
  5. NHEMA

Recommended Citation

External Links

GSearch checked for 2020 platform.1