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Blue-mantled Thornbill - BirdForum Opus

Subspecies stanleyi
Photo by Stanley Jones
Parque El Cajas, Azuay Province, Ecuador, November 2014
Chalcostigma stanleyi


12–13 cm; Long forked tail

  • Short, straight, black bill
  • Sooty-brown plumage
  • Turquoise uppertail-coverts
  • Undertail coverts (crissum) whitish with sooty or ochraceous darker markings. Feathers towards base of feet whiter (somewhat like "boots"). Note that none of: the Ridgely guide to birds of Ecuador, the Proves Colombia guide, the Schulenburg et al Peru guide accurately show this.


South America: found in Colombia, Ecuador, Peru and Bolivia.



There are 3 subspecies[1]:

  • C. s. stanleyi:
  • C. s. versigulare:
  • Andes of Peru (east of Río Marañón) to Carpish Mountains
  • C. s. vulcani:
  • Andes of eastern Peru (south of Río Huallaga) to western Bolivia


Steep slopes of humid páramo vegetation observed at heights around 3970-4000 m.



Their diet consists of nectar from small flowers, particularly berberis and gauteria.


  1. Clements, J. F., T. S. Schulenberg, M. J. Iliff, D. Roberson, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2014. The eBird/Clements checklist of birds of the world: Version 6.9., with updates to August 2014. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/
  2. Avibase
  3. Handbook of the Birds of the World Alive (retrieved May 2015)
  4. BF Member observations

Recommended Citation

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