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Yellow-winged Blackbird - BirdForum Opus

Revision as of 21:42, 21 September 2018 by Deliatodd-18346 (talk | contribs) (References updated)
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Photo © by Jamfaraco
Passagem, Laguna-SC/ Brazil, January 2007
Agelasticus thilius


Photo © by Luis R
Batuco Wetland,Santiago, Chile, August 2016

17·9 cm (7 in)

  • Black overall plumage
  • Yellow shoulders and underwing coverts


  • Heavily streaked brownish plumage
  • Pale supercilium
  • Yellow shoulder patch


South America: found in South Brazil, Uruguay, central Argentina, central Chile, Bolivia and Peru.


It has been placed in Chrysomus or in Agelasticus.


Immature, probably male
Photo © by nkgray
Parque Bicentenario, Santiago, Chile, June 2013

There are 3 subspecies[1]:

  • A. t. alticola:
Andes of south-eastern Peru (Cuzco) to north-western Bolivia
  • A. t. thilius:
  • A. t. petersii:


Swamps, intertidal marshes, pastureland always close to water.



Female, subspecies thilius
Photo © by Luis R
Santo Domingo, Valparaiso, Chile, June 2018

Their diet consists of insects and seeds.


Monogamous; colonial breeders. The female builds the nest in tall grass close to water. The clutch consists of 2-4 eggs which are incubated by the female for 13 days.


  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 http://www.birds.cornell.edu/clementschecklist/download/
  2. Handbook of the Birds of the World Alive (retrieved September 2016)

Recommended Citation

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