Cantorchilus longirostris
Silhouette: Matt Wilkins · PhyloPic
In 3 days <5% in a week ~10%
The long-billed wren (Cantorchilus longirostris) is a species of bird in the family Troglodytidae. It is endemic to Brazil. The long-billed wren has been treated as being conspecific with the buff-breasted wren (Cantorchilus leucotis). The latter has been suggested for elevation to species status.
The long-billed wren is 19 to 21.5 cm (7.5 to 8.5 in) long and weighs 20 to 21 g (0.71 to 0.74 oz). The crown and nape of adults of the nominate subspecies are rich dark brown that becomes progressively more reddish to the rump; the lower back has obscure bars. Their tail is reddish brown with darker bars. They have an off-white supercilium, a darkish brown eyestripe, cheeks mottled off-white and dark gray, and a blackish malar stripe. Their throat color ranges from whitish to pale buff; their chest is reddish buff and the belly a deep rich buff. Juveniles are almost the same but their facial markings are not as distinct. C. l. bahiae is paler overall than the nominate, with the underparts' colors being much less saturated. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Serra dos Órgãos National Park | 🇧🇷 Brazil | |
| 2 | Tijuca National Park | 🇧🇷 Brazil | |
| 3 | Chapada Diamantina National Park | 🇧🇷 Brazil | |
| 4 | Itatiaia National Park | 🇧🇷 Brazil |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Rio de Janeiro | 🇧🇷 Brazil | |
| 2 | Niterói | 🇧🇷 Brazil | |
| 3 | Santos | 🇧🇷 Brazil | |
| 4 | São Paulo | 🇧🇷 Brazil |
Rare
Under 5% of wildlife watchers report a Long-billed Wren sighting in Itatiaia National Park on a given day, based on 16 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 296th most-seen of the 352 birds we can rate there. Over three days the chance rises to under 5%, and over a week to about 10%, if each day is a fresh chance.
December and January
In those months about 10% of wildlife watchers report a Long-billed Wren in Itatiaia National Park on a given day, against under 5% in February to November, the lowest months. Those are among Itatiaia National Park's wettest months, with about 320 mm of rain a month against 25 mm in July.
Between 7 and 10 am
Across all the parks we cover, that three-hour window holds the most Long-billed Wren 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 4
Of the 4 parks where we can rate Long-billed Wren sightings, Itatiaia National Park ranks 4th at under 5%. The best odds are in Serra dos Órgãos National Park (Brazil, about 20%), Tijuca National Park (Brazil, about 10%) and Chapada Diamantina National Park (Brazil, about 10%).
GBIF citizen-science records
It is estimated from how often the Long-billed Wren is recorded against all the birds logged in Itatiaia National Park (16 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.
