Buntings and New World Sparrows (Emberizidae)

Common Diuca-finch (Diuca diuca) - HBW 16, p. 616

French: Diuca gris German: Blausteißammer Spanish: Diuca Común
Other common names: Lesser Diuca-finch (minor)

Taxonomy: Fringilla Diuca Molina, 1782, Chile.
Previously thought to form a superspecies with D. speculifera, but aspects of morphology, voice and typically walking (rather than hopping) locomotion suggest that it is not close to that species. Recent molecular data indicate that present species is the earliest offshoot in a clade which includes Lophospingus, White-banded Tanager (Neothraupis fasciata), Paroaria cardinals, Magpie Tanager (Cissopis leverianus) and Schistochlamys tanagers; this would suggest that all should be included in the tanager family (Thraupidae). Four subspecies recognized.

Subspecies and Distribution:

  • crassirostris Hellmayr, 1932 - NC Chile (Antofagasta S to Coquimbo), extreme S Bolivia (SE Potosí) and N Argentina (Jujuy and Salta S to La Rioja).
  • diuca (Molina, 1782) - C & SC Chile (Coquimbo S to Aysén) and adjacent Argentina (Mendoza S to Santa Cruz).
  • minor Bonaparte, 1850 - C & S Argentina (Córdoba, San Luis and S Buenos Aires S through E Mendoza to Santa Cruz) and S Chile (N Magallanes); non-breeding also N to NE Argentina (Tucumán and Entre Ríos), S Brazil (W Rio Grande do Sul) and Uruguay.
  • chiloensis R. A. Philippi [Bañados] & Peña, 1964 - Chiloé I (SC Chile).