Campylorhamphus pusillus
Silhouette: Sheatherius · PhyloPic
In 3 days ~10%
The brown-billed scythebill (Campylorhamphus pusillus) is a species of bird in the subfamily Dendrocolaptinae of the ovenbird family Furnariidae. It is found in Colombia, Costa Rica, Ecuador, Panama, Peru, and Venezuela.
Subspecies C. p. borealis has sometimes been treated as a separate species. The brown-billed scythebill is 20 to 25 cm (7.9 to 9.8 in) long and weighs 32 to 48 g (1.1 to 1.7 oz). It is a slim, medium-sized woodcreeper with a very long, slim, dramatically decurved bill. The sexes have the same plumage. Adults of the nominate subspecies have a face and neck streaked buff and blackish brown, with a faint buffy supercilium. Their crown and nape are dark brown, with thin deep buff streaks that extend sparsely onto the upper back. Their back and... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Tapantí-Macizo de la Muerte National Park | 🇨🇷 Costa Rica | |
| 2 | Monteverde Cloud Forest Reserve | 🇨🇷 Costa Rica | |
| 3 | Farallones de Cali National Natural Park | 🇨🇴 Colombia | |
| 4 | Poás Volcano National Park | 🇨🇷 Costa Rica | |
| 5 | Arenal Volcano National Park | 🇨🇷 Costa Rica | |
| 6 | Volcán Barú National Park | 🇵🇦 Panama | |
| 7 | Braulio Carrillo National Park | 🇨🇷 Costa Rica | |
| 8 | Darién National Park | 🇵🇦 Panama | |
| 9 | Chirripó National Park | 🇨🇷 Costa Rica | |
| 10 | La Amistad International Park (Panama) | 🇵🇦 Panama | |
| 11 | Tenorio Volcano National Park | 🇨🇷 Costa Rica | |
| 12 | Corcovado National Park | 🇨🇷 Costa Rica | |
| 13 | Los Nevados National Natural Park | 🇨🇴 Colombia |
Rare
Under 5% of wildlife watchers report a Brown-billed Scythebill sighting in Arenal Volcano National Park on a given day, based on 264 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 292nd most-seen of the 503 birds we can rate there. Over three days the chance rises to about 10%, if each day is a fresh chance.
September and October
In those months about 10% of wildlife watchers report a Brown-billed Scythebill in Arenal Volcano National Park on a given day, against under 5% in November to August, the lowest months.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Brown-billed Scythebill sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 13 parks where we can rate Brown-billed Scythebill sightings, Arenal Volcano National Park ranks 5th at under 5%, level with the leaders once rounded. The best odds are in Tapantí-Macizo de la Muerte National Park (Costa Rica, under 5%), Monteverde Cloud Forest Reserve (Costa Rica, under 5%) and Farallones de Cali National Natural Park (Colombia, under 5%).
Same family: Furnariidae
The closest relatives of the Brown-billed Scythebill that you can see in Arenal Volcano National Park (family Furnariidae, Ovenbirds and Woodcreepers) are Wedge-billed Woodcreeper (about 30%), Streak-headed Woodcreeper (about 20%) and Spotted Woodcreeper (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Brown-billed Scythebill is recorded against all the birds logged in Arenal Volcano National Park (264 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.
