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Black-billed Shrike-Tyrant - BirdForum Opus

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Subspecies maritimus
Photo © by zweiblumen
Torres del Paine NP, Chile, November 2007
Agriornis montanus


23–24 cm (9-9½ in)
Bill black and thinner than most congeners.


Subspecies insolens
Photo © by Stanley Jones
Huánuco, Peru, August 2017

In north undertail coverts and tail sides white while in central and southern Chile and Argentina, the nearest part of the tail sides are dark. Eye is pale in northern birds but may be dark in birds from southern Bolivia and south of there.


South America: found in Colombia, Ecuador, Peru, Bolivia, Chile, Argentina

Vagrant to the Falkland Islands.


The scientific name has been spelled montana in the past.


Subspecies maritimus
Photo © by Luis R
La Parva. Santiago Metropolitan Region, Chile, 1 May 2019

There are 5 subspecies[1]:

  • A. m. solitarius:
  • A. m. insolens:
  • A. m. intermedius:
  • Andes of western Bolivia (La Paz and Oruro) to northern Chile (Tarapacá)
  • A. m. montanus:
  • Andes of eastern and southern Bolivia and north-western Argentina (south to La Rioja)
  • A. m. maritimus (A. m. leucura included herein):


High-altitude shrubland, high-altitude grassland with scattered trees, and pastureland; can be seen at heights around 3,500m


Likes to perch on wires, buildings in villages, and rocks, but rarely on bushes.


Their diet consists of large insects, frogs, lizards, small mammals, eggs, nestlings and seeds.


  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 Nov 2017)
  3. BF Member observations
  4. Ridgely and Tudor 2009. Field guide to the songbirds of South America - The Passerines. University of Texas Press. ISBN 978-0-292-71979-8

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