Nasica longirostris
Silhouette: Rebecca Groom · PhyloPic
In 3 days ~30% in a week ~50%
The long-billed woodcreeper (Nasica longirostris) is a sub-oscine passerine bird in subfamily Dendrocolaptinae of the ovenbird family Furnariidae. It is found in Bolivia, Brazil, Colombia, Ecuador, French Guiana, Peru, and Venezuela.
The long-billed woodcreeper is the only member of genus Nasica. It is monotypic: No subspecies are recognized. Its closest relative is the cinnamon-throated woodcreeper (Dendrexetastes rufigula). The population south of the Amazon River has significantly longer bills than those birds north of the river, and has been treated by some authors as subspecies N. l. australis.
The long-billed woodcreeper is one of the largest woodcreepers, with a slim body, small head, long neck, long tail, and an exceptionally long, slightly decurved, bill. It is 34 to 36 cm (13 to 14 in) long and weighs 78 to 92 g (2.8 to 3.2 oz). The sexes are alike. The adult's crown, nape, and auricular area are blackish brown with whitish buff streaks. It has a white supercilium, throat, and foreneck. Its back, rump, wings, and tail are bright cinnamon-rufous to rufous-chestnut. The tips of its outermost primaries are dark brown. Its breast... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Anavilhanas National Park | 🇧🇷 Brazil | |
| 2 | Cuyabeno Wildlife Reserve | 🇪🇨 Ecuador | |
| 3 | Amacayacu National Natural Park | 🇨🇴 Colombia | |
| 4 | Yasuní National Park | 🇪🇨 Ecuador | |
| 5 | Tambopata National Reserve | 🇵🇪 Peru | |
| 6 | Manu National Park | 🇵🇪 Peru |
With luck
About 10% of wildlife watchers report a Long-billed Woodcreeper sighting in Yasuní National Park on a given day, based on 334 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 157th most-seen of the 533 birds we can rate there. Over three days the chance rises to about 30%, and over a week to about 50%, if each day is a fresh chance.
October
In that month about 20% of wildlife watchers report a Long-billed Woodcreeper in Yasuní National Park on a given day, against about 10% in November to September, the lowest months.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Long-billed Woodcreeper sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
4th of 6
Of the 6 parks where we can rate Long-billed Woodcreeper sightings, Yasuní National Park ranks 4th at about 10%. The best odds are in Anavilhanas National Park (Brazil, about 30%), Cuyabeno Wildlife Reserve (Ecuador, about 30%) and Amacayacu National Natural Park (Colombia, about 20%).
Same family: Furnariidae
The closest relatives of the Long-billed Woodcreeper that you can see in Yasuní National Park (family Furnariidae, Ovenbirds and Woodcreepers) are Buff-throated Woodcreeper (about 30%), Cinnamon-throated Woodcreeper (about 10%) and Striped Woodcreeper (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Long-billed Woodcreeper is recorded against all the birds logged in Yasuní National Park (334 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.
