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White-tailed Tyrannulet - BirdForum Opus

Revision as of 22:34, 5 May 2017 by Deliatodd-18346 (talk | contribs) (Imp size. Links & typos)
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Photo by Stanley Jones
Yambrasbamba, Amazonas, Peru, January 2017
Mecocerculus poecilocercus


11 cm (4¼ in). A tyrannulet with prominent white outer tail feathers.

  • Thin white supercilium
  • Faint blackish eyestripe
  • Whitish face
  • Medium grey crown, greenish-olive rest of upperparts
  • Bright greenish-yellow rump and uppertail-coverts
  • Dusky wings with two white to pale buff wingbars, pale yellow edges of flight feathers
  • Dusky olive tail, white outer tail feathers
  • Greyish-white throat and underparts, yellowish-white belly and undertail-coverts

Sexes similar, females are slightly smaller. Juveniles undescribed.


South America: found in the Andes of Colombia, Ecuador, and to southern Peru.
Uncommon to common in its range.


This is a monotypic species.


Moist montanes, especially mossy cloudforest.
Occurs at 1400 to 3050 m, mainly at 1800 to 2400 m. Replaces White-banded Tyrannulet at lower elevations.



Feeds on insects, takes sometimes small fruits.
Forages actively, often hopping along thin branches in dense foliage, regularly fanning its tail. Usually seen in pairs or in small groups of up to six birds, often in mixed-species flocks.


Birds with enlarged gonads have been recorded in August and September in Colombia. No other information available.


This is a resident species.


  1. Clements, J. F., T. S. Schulenberg, M. J. Iliff, D. Roberson, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2016. The eBird/Clements checklist of birds of the world: v2016, with updates to August 2016. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/
  2. Handbook of the Birds of the World Alive (retrieved November 2016)

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