Arremon flavirostris
Silhouette: Juan Camilo Cepeda-Duque · PhyloPic
In 3 days ~50% in a week ~80%
The saffron-billed sparrow (Arremon flavirostris) is a species of bird in the family Passerellidae, the New World sparrows. It is found in Argentina, Bolivia, Brazil, and Paraguay. The saffron-billed sparrow has two subspecies, the nominate Arremon flavirostris flavirostris and the "gray-backed" A. f. polionotus.
The saffron-billed sparrow's name comes from its "striking orange bill". The adult male's head is mostly black, with a white supercilium from above the eye to the back of the head. The neck is gray and the back, wings, and tail are 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 female's underparts are buffy with brown flanks. Juveniles are similar to the adults but duller. The species' length is from 15 to 16.5 cm (5.9 to 6.5 in). The mean weights of 27 specimens from... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Chapada dos Guimarães National Park | 🇧🇷 Brazil | |
| 2 | El Impenetrable National Park | 🇦🇷 Argentina | |
| 3 | Iguazú National Park | 🇦🇷 Argentina | |
| 4 | Iguaçu National Park | 🇧🇷 Brazil | |
| 5 | Serra da Canastra National Park | 🇧🇷 Brazil | |
| 6 | Emas National Park | 🇧🇷 Brazil | |
| 7 | Iberá National Park | 🇦🇷 Argentina | |
| 8 | Parque Estadual Encontro das Águas | 🇧🇷 Brazil |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Belo Horizonte | 🇧🇷 Brazil |
Possible
About 20% of wildlife watchers report a Saffron-billed Sparrow sighting in El Impenetrable National Park on a given day, based on 57 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 82nd most-seen of the 219 birds we can rate there. Over three days the chance rises to about 50%, and over a week to about 80%, if each day is a fresh chance.
July
In that month about 30% of wildlife watchers report a Saffron-billed Sparrow in El Impenetrable National Park on a given day, against about 10% in January–February and April, the lowest months. That is one of El Impenetrable National Park's driest months, with about 25 mm of rain against 120 mm in March. December has too few records to rate.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Saffron-billed 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.
Among the best
Of the 8 parks where we can rate Saffron-billed Sparrow sightings, El Impenetrable National Park ranks 2nd at about 20%, level with the leaders once rounded. The best odds are in Chapada dos Guimarães National Park (Brazil, about 20%).
Same family: Passerellidae
The closest relatives of the Saffron-billed Sparrow that you can see in El Impenetrable National Park (family Passerellidae, New World Sparrows) are Rufous-collared Sparrow (about 50%) and Grassland Sparrow (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Saffron-billed Sparrow is recorded against all the birds logged in El Impenetrable National Park (57 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.
