Arremonops rufivirgatus
Silhouette: L. Shyamal · PhyloPic
In 3 days ~80% in a week >90%
The olive sparrow (Arremonops rufivirgatus) is a species of bird in the family Passerellidae, the New World sparrows. It is found from Texas to Costa Rica. The olive sparrow was formally described in 1851 with the binomial Embernagra rufivigata and the English name "brown striped olive finch". In 1896 Robert Ridgway erected the genus Arremonops and reassigned the olive sparrow to it as the type species.
The olive sparrow's further taxonomy is unsettled. The IOC and AviList assign it these eight subspecies: The other systems include it within the nominate A. r. rufivirgatus. This article follows the eight-subspecies model.
The olive sparrow is about 12 to 14 cm (4.7 to 5.5 in) long and weighs 15 to 30 g... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cañón del Sumidero National Park | 🇲🇽 Mexico | |
| 2 | Cumbres de Monterrey National Park | 🇲🇽 Mexico | |
| 3 | Santa Rosa National Park | 🇨🇷 Costa Rica | |
| 4 | Rincón de la Vieja National Park | 🇨🇷 Costa Rica | |
| 5 | Cabo Blanco Absolute Nature Reserve | 🇨🇷 Costa Rica | |
| 6 | Palo Verde National Park | 🇨🇷 Costa Rica | |
| 7 | Calakmul Biosphere Reserve | 🇲🇽 Mexico | |
| 8 | Ostional Wildlife Refuge | 🇨🇷 Costa Rica | |
| 9 | Carara National Park | 🇨🇷 Costa Rica | |
| 10 | Sian Ka'an Biosphere Reserve | 🇲🇽 Mexico | |
| 11 | Masaya Volcano National Park | 🇳🇮 Nicaragua | |
| 12 | Ría Lagartos Biosphere Reserve | 🇲🇽 Mexico | |
| 13 | Monteverde Cloud Forest Reserve | 🇨🇷 Costa Rica | |
| 14 | Tikal National Park | 🇬🇹 Guatemala | |
| 15 | Tenorio Volcano National Park | 🇨🇷 Costa Rica |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Monterrey | 🇲🇽 México | |
| 2 | San José | 🇨🇷 Costa Rica | |
| 3 | San Antonio | 🇺🇸 United States |
Likely
About 40% of wildlife watchers report an Olive Sparrow sighting in Cañón del Sumidero National Park on a given day, based on 397 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 12th most-seen of the 243 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 and April
In those months about 70% of wildlife watchers report an Olive Sparrow in Cañón del Sumidero National Park on a given day, against about 10% in October, the lowest month. Those are among Cañón del Sumidero National Park's driest months, with about 15 mm of rain a month against 260 mm in June.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Olive 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.
Yes
Of the 15 parks where we can rate Olive Sparrow sightings, Cañón del Sumidero National Park has the highest daily chance: about 40%. Next come Cumbres de Monterrey National Park (Mexico, about 40%) and Santa Rosa National Park (Costa Rica, about 20%).
GBIF citizen-science records
It is estimated from how often the Olive Sparrow is recorded against all the birds logged in Cañón del Sumidero National Park (397 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.
