Geospizopsis plebejus
Silhouette: Sheatherius · PhyloPic
In 3 days ~90% in a week >90%
The ash-breasted sierra finch (Geospizopsis plebejus) is a species of bird in the family Thraupidae. It is found in Argentina, Bolivia, Chile, Ecuador, and Peru. Its natural habitats are subtropical or tropical dry shrubland, subtropical or tropical high-altitude shrubland, and subtropical or tropical high-altitude grassland.
The ash-breasted sierra finch was formally described by the Swiss naturalist Johann Jakob von Tschudi in 1844 as Phrygilus plebejus. Tschudi did not give a type locality in his description, but the Austrian ornithologist Carl Hellmayr contended in 1938 that the type specimens were probably collected from the Junín highlands of Peru. The subspecies ocularis was described by P. L. Sclater in 1859 based on specimens collected from Cuenca, Ecuador. Sclater initially described ocularis as a distinct species, but it was subsequently lumped as a subspecies of plebejus. naroskyi was described in 1983 by Manuel Nores and Dario Yzurieta based on an adult male collected from Pampa de Achala in the Sierras de Córdoba of Argentina.
The generic name Geospizopsis is derived from the name of the genus Geospiza, meaning 'ground finch' in Ancient Greek, and the Greek... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Lauca National Park | 🇨🇱 Chile |
More parks will be added in future updates.
Likely
About 60% of wildlife watchers report an Ash-breasted Sierra-Finch sighting in Lauca National Park on a given day, based on 640 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 8th most-seen of the 112 birds we can rate there. Over three days the chance rises to about 90%, and over a week to over 90%, if each day is a fresh chance.
February
In that month about 80% of wildlife watchers report an Ash-breasted Sierra-Finch in Lauca National Park on a given day, against about 40% in July and August, the lowest months. That is one of Lauca National Park's wettest months, with about 140 mm of rain against almost none in May.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Ash-breasted Sierra-Finch sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Only Lauca National Park, in our data
Lauca National Park is the only park on Wallace's Line with enough records to rate Ash-breasted Sierra-Finch sightings: about 60% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Ash-breasted Sierra-Finch is recorded against all the birds logged in Lauca National Park (640 verified sightings from 2019 to 2026), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
