Birds
Band-tailed Sierra-finch
Phrygilus alaudinus
Identified in flight by a pale band crossing its tail feathers, a band-tailed sierra-finch ranges across a far broader stretch of the Andes than its more geographically restricted Patagonian sierra-finch relative.
Overview
The band-tailed sierra-finch, Phrygilus alaudinus, is a Least Concern bird native to grassland and mountain habitat across a broad stretch of the Andes from Ecuador to Argentina and Chile. Its distinctive tail marking, its exceptionally wide elevational and geographic range, and its adaptable omnivorous diet make it one of the more widely distributed sierra-finches found anywhere in South America.
A sierra-finch with room to roam
While the Patagonian sierra-finch stays tied to a comparatively narrow stretch of southern forest, the band-tailed sierra-finch instead ranges across a vastly larger stretch of the Andes, tolerating everything from low valleys to high, rocky mountain terrain along the way.
Status
Least Concern, remaining widespread and generally stable across suitable grassland and mountain habitat throughout its broad Andean range.
Band-tailed Sierra-finch: common questions
How did the band-tailed sierra-finch get its name?
This species has a distinctive pale band crossing its tail feathers, a feature that gives the species its common name and helps with identification, especially in flight.
How does the band-tailed sierra-finch's range compare with the Patagonian sierra-finch?
This species ranges across a far broader stretch of the Andes than its more geographically restricted Patagonian sierra-finch relative, extending much further north.
What elevations does the band-tailed sierra-finch use?
This species is found across a wide range of elevations, from lower valleys up into high, rocky mountain terrain throughout its Andean range.
Does the band-tailed sierra-finch form flocks?
Yes, this species often forms flocks outside the breeding season, foraging together across open grassland and scrub habitat.