Ammodramus humeralis
Silhouette: Andy Wilson · PhyloPic
In 3 days <5%
The grassland sparrow (Ammodramus humeralis) is a species of bird in the family Passerellidae. It is found in Argentina, Bolivia, Brazil, Colombia, French Guiana, Guyana, Paraguay, Peru, Suriname, Uruguay, and Venezuela. Its natural habitats are dry savannah, subtropical or tropical seasonally wet or flooded lowland grassland, and pastureland.
The grassland sparrow is a robust species with a large head and a short tail, with a total length of about 13 cm (5 in). The wings are short and the legs fairly long. The upper parts are brownish-grey streaked with black. The breast and flanks are greyish-buff or pinkish-buff and the underparts are dull white. There is a narrow white eye-ring, and a spot of yellow on the lores and another on the bend of the wing. The song is a high-pitched but thin series of plaintive phrases, "eee, telee, teeeee". This bird is similar in appearance to the yellow-browed sparrow, but that has more yellow on the face and the voice is quite distinct.
This sparrow is native to the western half of South America. Its range includes Argentina, Bolivia, Brazil, Colombia, French Guiana, Guyana, Paraguay, Peru, Suriname... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Emas National Park | 🇧🇷 Brazil | |
| 2 | Serra da Canastra National Park | 🇧🇷 Brazil | |
| 3 | Iberá National Park | 🇦🇷 Argentina | |
| 4 | El Palmar National Park | 🇦🇷 Argentina | |
| 5 | Chapada Diamantina National Park | 🇧🇷 Brazil | |
| 6 | El Impenetrable National Park | 🇦🇷 Argentina | |
| 7 | Serra dos Órgãos National Park | 🇧🇷 Brazil | |
| 8 | Iguaçu National Park | 🇧🇷 Brazil | |
| 9 | Chapada dos Guimarães National Park | 🇧🇷 Brazil | |
| 10 | Iguazú National Park | 🇦🇷 Argentina | |
| 11 | Manu National Park | 🇵🇪 Peru |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Brasilia | 🇧🇷 Brazil | |
| 2 | Curitiba | 🇧🇷 Brazil | |
| 3 | Santa Cruz de la Sierra | 🇧🇴 Bolivia | |
| 4 | Campinas | 🇧🇷 Brazil | |
| 5 | Campo Grande | 🇧🇷 Brazil | |
| 6 | São Paulo | 🇧🇷 Brazil | |
| 7 | Asuncion | 🇵🇾 Paraguay | |
| 8 | Buenos Aires | 🇦🇷 Argentina |
Rare
Under 5% of wildlife watchers report a Grassland Sparrow sighting in Iguazú National Park on a given day, based on 24 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 282nd most-seen of the 343 birds we can rate there. Over three days the chance rises to under 5%, if each day is a fresh chance.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Grassland Sparrow in Iguazú National Park on a given day, so our monthly data shows no clear season.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Grassland Sparrow sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
10th of 11
Of the 11 parks where we can rate Grassland Sparrow sightings, Iguazú National Park ranks 10th at under 5%. The best odds are in Emas National Park (Brazil, about 60%), Serra da Canastra National Park (Brazil, about 40%) and Iberá National Park (Argentina, about 30%). All parks ranked.
Same family: Passerellidae
The closest relatives of the Grassland Sparrow that you can see in Iguazú National Park (family Passerellidae, New World Sparrows) are Saffron-billed Sparrow (about 20%) and Rufous-collared Sparrow (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Grassland Sparrow is recorded against all the birds logged in Iguazú National Park (24 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.
