Serpophaga nigricans
Silhouette: Emily Willoughby · PhyloPic
In 3 days ~10% in a week ~20%
The sooty tyrannulet (Serpophaga nigricans) is a species of bird in the family Tyrannidae, the tyrant flycatchers. It is small, usually weighing 9 grams with a length of 12 centimeters, and has gray or brownish-grey feathers with black tail feathers.
It is found in Argentina, Brazil, and Uruguay; also southern Paraguay. A small extension of its range is in southeastern Bolivia. Its natural habitats are subtropical or tropical moist shrubland, rivers, and swamps. The sooty tyrannulet was first described by the French ornithologist Louis Pierre Vieillot based on observations by the Spanish military officer Félix de Azara from 1805. Azara gave it the name "Tachuri obscurito menor". In 1817, Vieillot gave it the scientific name Sylvia nigricans. In 1927, the ornithologist Carl Eduard Hellmayr placed the sooty tyrannulet in the genus Serpophaga with the name Serpophaga nigricans. It does not have any subspecies. It was once thought be most closely related to Urich's tyrannulet, however a mitochondrial DNA study has shown that it is most closely related to the torrent tyrannulet.
The sooty tyrannulet is overall a dark grey colour, with a brownish tinge to... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Serra da Canastra National Park | 🇧🇷 Brazil | |
| 2 | Iberá National Park | 🇦🇷 Argentina | |
| 3 | Emas National Park | 🇧🇷 Brazil | |
| 4 | Itatiaia National Park | 🇧🇷 Brazil | |
| 5 | Iguaçu National Park | 🇧🇷 Brazil | |
| 6 | Iguazú National Park | 🇦🇷 Argentina |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Buenos Aires | 🇦🇷 Argentina | |
| 2 | Curitiba | 🇧🇷 Brazil | |
| 3 | Porto Alegre | 🇧🇷 Brazil | |
| 4 | Cordoba | 🇦🇷 Argentina | |
| 5 | São Paulo | 🇧🇷 Brazil |
Rare
Under 5% of wildlife watchers report a Sooty Tyrannulet sighting in Buenos Aires on a given day, based on 377 verified sightings from GBIF citizen-science data. It is the 156th most-seen of the 274 birds we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Sooty Tyrannulet in Buenos Aires on a given day, so our monthly data shows no clear season.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Sooty Tyrannulet 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 5 cities where we can rate Sooty Tyrannulet sightings, Buenos Aires has the highest daily chance: under 5%. Next come Curitiba (Brazil, under 5%) and Porto Alegre (Brazil, under 5%).
Same genus: Serpophaga
The closest relatives of the Sooty Tyrannulet that you can see in Buenos Aires (genus Serpophaga, Riverine Tyrannulets and Allies) are White-crested Tyrannulet (about 30%) and Straneck's Tyrannulet (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Sooty Tyrannulet is recorded against all the birds logged in Buenos Aires (377 verified sightings), 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.
