Ammodramus humeralis
Silhouette: Andy Wilson · PhyloPic
In 3 days ~80% in a week >90%
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 |
Likely
About 40% of wildlife watchers report a Grassland Sparrow sighting in Serra da Canastra National Park on a given day, based on 285 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 29th most-seen of the 294 birds we can rate there. Over three days the chance rises to about 80%, and over a week to over 90%, if each day is a fresh chance.
February
In that month about 60% of wildlife watchers report a Grassland Sparrow in Serra da Canastra National Park on a given day, against about 30% in March–April and September, the lowest months. That is one of Serra da Canastra National Park's wettest months, with about 250 mm of rain against almost none in July.
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.
2nd of 11
Of the 11 parks where we can rate Grassland Sparrow sightings, Serra da Canastra National Park ranks 2nd at about 40%. The best odds are in Emas National Park (Brazil, about 60%). All parks ranked.
GBIF citizen-science records
It is estimated from how often the Grassland Sparrow is recorded against all the birds logged in Serra da Canastra National Park (285 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.
