Pardirallus nigricans
Silhouette: Sheatherius · PhyloPic
In 3 days ~10%
The blackish rail (Pardirallus nigricans) is a species of bird in the subfamily Rallinae of the rail, crake, and coot family Rallidae. It is found in Argentina, Brazil, Colombia, Ecuador, Paraguay, Peru, Venezuela, and possibly Bolivia.
The blackish rail has previously been placed in the large genus Rallus, and also in genus Orygonax with the plumbeous rail (Pardirallus sanguinolentus). Some authors propose that the blackish and plumbeous rails are conspecific, and they do form a superspecies.
The blackish rail is 27 to 29 cm (11 to 11 in) long; one male weighed 217 g (7.7 oz). The sexes are alike. They have a long yellow-green bill and pinkish legs. The nominate subspecies has unmarked dark brown upperparts, a white chin and throat, and dark gray face and underparts. P. n. caucae is larger than the nominate and has a larger and whiter throat patch and paler underparts especially at the vent.
The blackish rail has a disjunct distribution. The nominate subspecies has two populations. One is found from northeastern Brazil... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Iguazú National Park | 🇦🇷 Argentina | |
| 2 | Iguaçu National Park | 🇧🇷 Brazil | |
| 3 | Serra da Canastra National Park | 🇧🇷 Brazil | |
| 4 | Serra dos Órgãos National Park | 🇧🇷 Brazil | |
| 5 | Chapada Diamantina National Park | 🇧🇷 Brazil | |
| 6 | Manu National Park | 🇵🇪 Peru | |
| 7 | Farallones de Cali National Natural Park | 🇨🇴 Colombia | |
| 8 | Los Nevados National Natural Park | 🇨🇴 Colombia |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Curitiba | 🇧🇷 Brazil | |
| 2 | São Paulo | 🇧🇷 Brazil | |
| 3 | Porto Alegre | 🇧🇷 Brazil | |
| 4 | Campinas | 🇧🇷 Brazil | |
| 5 | Belo Horizonte | 🇧🇷 Brazil | |
| 6 | Santos | 🇧🇷 Brazil | |
| 7 | Goiânia | 🇧🇷 Brazil | |
| 8 | Rio de Janeiro | 🇧🇷 Brazil | |
| 9 | Brasilia | 🇧🇷 Brazil | |
| 10 | Maceió | 🇧🇷 Brazil |
Rare
Under 5% of wildlife watchers report a Blackish Rail sighting in Chapada Diamantina National Park on a given day, based on 13 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 213th most-seen of the 271 birds we can rate there. Over three days the chance rises to about 10%, if each day is a fresh chance.
July and November
In those months about 10% of wildlife watchers report a Blackish Rail in Chapada Diamantina National Park on a given day, against under 5% in August–October and December–June, the lowest months.
Between 7 and 10 am
Across all the parks we cover, that three-hour window holds the most Blackish Rail sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
5th of 8
Of the 8 parks where we can rate Blackish Rail sightings, Chapada Diamantina National Park ranks 5th at under 5%. The best odds are in Iguazú National Park (Argentina, about 10%), Iguaçu National Park (Brazil, about 10%) and Serra da Canastra National Park (Brazil, under 5%).
Same family: Rallidae
The closest relatives of the Blackish Rail that you can see in Chapada Diamantina National Park (family Rallidae, Rails, Gallinules, and Coots) are Russet-Crowned Crake (about 10%) and Common Moorhen (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Blackish Rail is recorded against all the birds logged in Chapada Diamantina National Park (13 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.
