Arremon dorbignii
Silhouette: Juan Camilo Cepeda-Duque · PhyloPic
In 3 days ~20% in a week ~40%
The moss-backed sparrow (Arremon dorbignii), also known as the stripe-crowned sparrow, is a species of bird in the family Passerellidae, the New World sparrows. It is found in South America from central Bolivia to northwestern Argentina.
The adult male moss-backed sparrow's head is mostly black, with a white supercilium from the lores to the back of the head and a narrow gray streak on the crown. The neck is gray and the back, wings, and tail are dull olive green. Its underside is white with grayish edges and a narrow black band across the upper chest. The adult female is similar but duller overall. The crown strip is olive and the underparts are buffy with brown flanks. Juveniles are similar to the adults but duller. The moss-backed sparrow shares the "striking orange bill" of its former "parent" saffron-billed sparrow. Six specimens from Argentina had a mean weight of 22.1 g (0.78 oz)
It differs from the saffron-billed sparrow by a slightly narrower collar and a longer eyebrow spanning on both sides of the eye. The moss-backed sparrow is found in Bolivia from La Paz, Cochabamba, and Santa Cruz Departments into northwest Argentina as... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Amboró National Park | 🇧🇴 Bolivia |
More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Moss-backed Sparrow sighting in Amboró National Park on a given day, based on 28 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 116th most-seen of the 273 birds we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
May and July–November
In those months about 10% of wildlife watchers report a Moss-backed Sparrow in Amboró National Park on a given day, against under 5% in December to April, the lowest months. June has too few records to rate.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Moss-backed Sparrow sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Only Amboró National Park, in our data
Amboró National Park is the only park on Wallace's Line with enough records to rate Moss-backed Sparrow sightings: about 10% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Moss-backed Sparrow is recorded against all the birds logged in Amboró National Park (28 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.
