Sclerurus albigularis
Silhouette: Sheatherius · PhyloPic
In 3 days ~10% in a week ~30%
The grey-throated leaftosser (Sclerurus albigularis) is a Near Threatened species of bird in the subfamily Sclerurinae, the leaftossers and miners, of the ovenbird family Furnariidae. It is found in Bolivia, Brazil, Colombia, Costa Rica, Ecuador, Panama, Peru, Trinidad and Tobago, and Venezuela.
The grey-throated leaftosser's taxonomy is unsettled. The International Ornithological Committee (IOC) and the Clements taxonomy assign it these seven subspecies: Sclerurus albigularis canigularis Ridgway, 1889 Sclerurus albigularis propinquus Bangs, 1899
Sclerurus albigularis albigularis Sclater, PL & Salvin, 1869 Sclerurus albigularis kunanensis Aveledo & Ginés, 1950 Sclerurus albigularis zamorae Chapman, 1923 Sclerurus albigularis albicollis Carriker, 1935 Sclerurus albigularis kempffi Kratter, 1997
BirdLife International's Handbook of the Birds of the World (HBW) does not recognize S. a. kunanensis. That subspecies might not be distinguishable from the nominate S. a. albigularis. The grey-throated and rufous-breasted leaftosser (S. scansor) are sister species.
This article follows the seven-subspecies model. The grey-throated leaftosser... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Amboró National Park | 🇧🇴 Bolivia | |
| 2 | Henri Pittier National Park | 🇻🇪 Venezuela | |
| 3 | Monteverde Cloud Forest Reserve | 🇨🇷 Costa Rica | |
| 4 | Main Ridge Forest Reserve | 🇹🇹 Trinidad and Tobago | |
| 5 | Rincón de la Vieja National Park | 🇨🇷 Costa Rica | |
| 6 | Podocarpus National Park | 🇪🇨 Ecuador | |
| 7 | Arenal Volcano National Park | 🇨🇷 Costa Rica | |
| 8 | Tenorio Volcano National Park | 🇨🇷 Costa Rica | |
| 9 | La Amistad International Park (Panama) | 🇵🇦 Panama |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Caracas | 🇻🇪 Venezuela |
Rare
Under 5% of wildlife watchers report a Gray-throated Leaftosser sighting in Monteverde Cloud Forest Reserve on a given day, based on 550 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 139th most-seen of the 412 birds we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
February, April and August–September
In those months about 10% of wildlife watchers report a Gray-throated Leaftosser in Monteverde Cloud Forest Reserve on a given day, against under 5% in March, May–July and October–January, the lowest months.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Gray-throated Leaftosser sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
3rd of 9
Of the 9 parks where we can rate Gray-throated Leaftosser sightings, Monteverde Cloud Forest Reserve ranks 3rd at under 5%. The best odds are in Amboró National Park (Bolivia, about 10%) and Henri Pittier National Park (Venezuela, about 10%).
GBIF citizen-science records
It is estimated from how often the Gray-throated Leaftosser is recorded against all the birds logged in Monteverde Cloud Forest Reserve (550 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.
