Grey-hooded Sierra Finch (Phrygilus gayi) [XC411748]
by Bobby Wilcox from Estacion Biologica Juan Mazar Barnett, Lago Buenos Aires, Santa Cruz, Argentina (song)
Grey-hooded Sierra Finch (Phrygilus gayi) [XC36146]
by Fabrice Schmitt from Choapa estuary, Chile (song)
Subspecies
Molecular-genetic studies indicate that genus belongs in tanager family (Thraupidae). May form a superspecies with Black-hooded Sierra-Finch (Phrygilus atriceps), Peruvian Sierra-Finch (Phrygilus punensis) and Patagonian Sierra-Finch (Phrygilus patagonicus) (the "hooded" group), and molecular data suggest that this group may be closely related to Sicalis. Has been considered conspecific with Black-hooded Sierra-Finch (Phrygilus atriceps), but the two rarely hybridize in area of north-central Chile (between Atacama and Coquimbo) where they are sympatric (only one hybrid specimen known, from Guatín, in Antofagasta). Sometimes thought conspecific with Peruvian Sierra-Finch (Phrygilus punensis), which it resembles in appearance. Range overlaps with that of Patagonian Sierra-Finch (Phrygilus patagonicus) in various sites in Andes and north-western Tierra del Fuego. Some evidence of hybridization in latter, but the two species generally remain separate, and occupy different habitats. Small coastal subspecies minor exhibits some plumage features intermediate between present species and Patagonian Sierra-Finch (Phrygilus patagonicus), and may be better included in latter on basis of its preference for forest or forest-edge habitat. Nominate subspecies in extreme north of range has particularly large bill, suggesting clinal variation in bill size.
The following 3 subspecies are recognised:
gayi (Gervais, 1834) - Northern and central Chile from Antofagasta south to í‘uble.
minor Philippi Bañados & Goodall, 1957 - Coastal range in north-central Chile from Atacama south to Valparaíso.
caniceps Burmeister, 1860 - Western Argentina (southern from western Salta) and southern Chile (southern from Aysen) south to Tierra del Fuego.