Tyrant-flycatchers (Tyrannidae) - HBW 9

Black-billed Shrike-tyrant (Agriornis montanus)

French: Gaucho à bec noir German: Schwarzschnabel-Hakentyrann Spanish: Gaucho Serrano
Other common names: Black-billed Ground-tyrant

Taxonomy: P [epoaza] Montana d’Orbigny and Lafresnaye, 1837, Chuquisaca, Bolivia.
Race intermedius is likely to be a clinal variant of insolens, nominate and maritimus, as it is phenotypically and geographically intermediate between these three races and does not exhibit a constant set of diagnosable features. Described race leucurus (from Patagonia) merged with maritimus, from which it appears indistinguishable. Five subspecies currently recognized.

Subspecies and Distribution:

  • solitarius P. L. Sclater, 1859 - Andes of S Colombia and Ecuador.
  • insolens P. L. Sclater & Salvin, 1869 - temperate zone of Peru.
  • intermedius Hellmayr, 1927 - W Bolivia (La Paz, Oruro) and N Chile (Tarapacá).

     See all 5 subspecies
  • solitarius P. L. Sclater, 1859 - Andes of S Colombia and Ecuador.
  • insolens P. L. Sclater & Salvin, 1869 - temperate zone of Peru.
  • intermedius Hellmayr, 1927 - W Bolivia (La Paz, Oruro) and N Chile (Tarapacá).
  • montanus (d’Orbigny & Lafresnaye, 1837) - E & S Bolivia and NW Argentina (Jujuy S to Tucumán and La Rioja).
  • maritimus (d’Orbigny & Lafresnaye, 1837) - Andes of C & S Chile (Tarapacá to Magallanes) and WC & SW Argentina (W Mendoza to W Santa Cruz); also C Argentina, in hills of Córdoba, S Buenos Aires and Somuncará Plateau.
  • Least Concern
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