Sclerurus scansor
Silhouette: Sheatherius · PhyloPic
In 3 days <5%
The rufous-breasted leaftosser (Sclerurus scansor) is a species of bird in the subfamily Sclerurinae, the leaftossers and miners, of the ovenbird family Furnariidae. It is found in Argentina, Brazil, and Paraguay. The rufous-breasted leaftosser's taxonomy is unsettled. BirdLife International's Handbook of the Birds of the World (HBW) treats the taxa as two separate species, the rufous-breasted leaftosser sensu stricto and the Ceara leaftosser S. cearensis. The South American Classification Committee of the American Ornithological Society also does not recognize the "Ceara leaftosser" but does not address subspecies within the rufous-breasted.
The rufous-breasted and grey-throated leaftosser (S. albigularis) are sister species. This article follows the one species, two-subspecies model. The rufous-breasted leaftosser is one of the larger members of genus Sclerurus. It is 17.5 to 20.1 cm (6.9 to 7.9 in) long and weighs 30 to 41 g (1.1 to 1.4 oz). The sexes... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Serra dos Órgãos National Park | 🇧🇷 Brazil | |
| 2 | Itatiaia National Park | 🇧🇷 Brazil | |
| 3 | Tijuca National Park | 🇧🇷 Brazil | |
| 4 | Iguazú National Park | 🇦🇷 Argentina | |
| 5 | Iguaçu National Park | 🇧🇷 Brazil |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Rio de Janeiro | 🇧🇷 Brazil | |
| 2 | São Paulo | 🇧🇷 Brazil |
Rare
Under 5% of wildlife watchers report a Rufous-breasted Leaftosser sighting in Iguazú National Park on a given day, based on 18 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 297th 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 Rufous-breasted Leaftosser in Iguazú National Park on a given day, so our monthly data shows no clear season.
Between 7 and 10 am
Across all the parks we cover, that three-hour window holds the most Rufous-breasted Leaftosser sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
4th of 5
Of the 5 parks where we can rate Rufous-breasted Leaftosser sightings, Iguazú National Park ranks 4th at under 5%. The best odds are in Serra dos Órgãos National Park (Brazil, about 20%), Itatiaia National Park (Brazil, under 5%) and Tijuca National Park (Brazil, under 5%).
Same family: Furnariidae
The closest relatives of the Rufous-breasted Leaftosser that you can see in Iguazú National Park (family Furnariidae, Ovenbirds and Woodcreepers) are Rufous Hornero (about 50%), White-eyed Foliage-gleaner (about 30%) and Ochre-breasted Foliage-gleaner (about 30%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Rufous-breasted Leaftosser is recorded against all the birds logged in Iguazú National Park (18 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.
