Xiphocolaptes major
Silhouette: Sheatherius · PhyloPic
In 3 days ~80% in a week >90%
The great rufous woodcreeper (Xiphocolaptes major) is a species of bird in the subfamily Dendrocolaptinae of the ovenbird family Furnariidae. It is found in Argentina, Bolivia, Brazil, and Paraguay. The great rufous woodcreeper has these four subspecies:
It is heavy-bodied with a long, heavy, somewhat decurved bill. It is 27 to 34 cm (11 to 13 in) long. Males weigh 120 to 150 g (4.2 to 5.3 oz) and females 120 to 162 g (4.2 to 5.7 oz). The sexes have the same plumage. Adults of the nominate subspecies X. m. major are almost entirely bright rufous-cinnamon. Their crown is slightly darker, their tail more chestnut, and their flight feathers reddish brown with dusky tips on the primaries. Their lores are blackish, their throat pale cinnamon with whitish buff streaks, and their underparts cinnamon with some buffy streaks on the breast and dusky brownish bars on the belly. Their iris is dark brown, rich red-brown, or... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | El Impenetrable National Park | 🇦🇷 Argentina | |
| 2 | Parque Estadual Encontro das Águas | 🇧🇷 Brazil |
Likely
About 40% of wildlife watchers report a Great Rufous Woodcreeper sighting in El Impenetrable National Park on a given day, based on 134 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 41st most-seen of the 219 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.
May, July and September
In those months about 50% of wildlife watchers report a Great Rufous Woodcreeper in El Impenetrable National Park on a given day, against about 30% in January–February and August, the lowest months. Those are among El Impenetrable National Park's driest months, with about 45 mm of rain a month against 120 mm in March. December has too few records to rate.
Between 7 and 10 am
Across all the parks we cover, that three-hour window holds the most Great Rufous Woodcreeper 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 2 parks where we can rate Great Rufous Woodcreeper sightings, El Impenetrable National Park has the highest daily chance: about 40%. Next come Parque Estadual Encontro das Águas (Brazil, under 5%).
Same family: Furnariidae
The closest relatives of the Great Rufous Woodcreeper that you can see in El Impenetrable National Park (family Furnariidae, Ovenbirds and Woodcreepers) are Narrow-billed Woodcreeper (about 70%), Rufous Hornero (about 60%) and Sooty-fronted Spinetail (about 50%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Great Rufous Woodcreeper is recorded against all the birds logged in El Impenetrable National Park (134 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.
