Camptostoma obsoletum
Silhouette: Emily Willoughby · PhyloPic
In 3 days ~50% in a week ~80%
The southern beardless tyrannulet (Camptostoma obsoletum) is a small passerine bird in subfamily Elaeniinae of family Tyrannidae, the tyrant flycatchers. It is found in Costa Rica, Panama, in every mainland South American country except Chile, and on Trinidad.
The southern beardless tyrannulet has these 13 subspecies: Several authors have suggested that the southern beardless tyrannulet may be composed of more than one species. Genetic evidence suggests that as many as three may be present. The Clements taxonomy divides the subspecies into two groups within the species.
The southern beardless tyrannulet shares genus Camptostoma with the northern beardless tyrannulet (C. imberbe); they have at times been considered conspecific and together they form a superspecies. The southern beardless tyrannulet is 9.5 to 10.5 cm (3.7 to 4.1 in) long and weighs 7 to 9 g (0.25 to 0.32 oz). It is a small flycatcher with a long pointed warbler-like bill. The sexes have the same... Wikipedia →
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Lima | 🇵🇪 Peru | |
| 2 | Quito | 🇪🇨 Ecuador | |
| 3 | Guayaquil | 🇪🇨 Ecuador | |
| 4 | Porto Alegre | 🇧🇷 Brazil | |
| 5 | Belém | 🇧🇷 Brazil | |
| 6 | Cali | 🇨🇴 Colombia | |
| 7 | Rosario | 🇦🇷 Argentina | |
| 8 | Curitiba | 🇧🇷 Brazil | |
| 9 | Rio de Janeiro | 🇧🇷 Brazil | |
| 10 | Belo Horizonte | 🇧🇷 Brazil |
Possible
About 20% of wildlife watchers report a Southern Beardless-Tyrannulet sighting in Rio de Janeiro on a given day, based on 711 verified sightings from GBIF citizen-science data. It is the 42nd most-seen of the 278 birds we can rate there. Over three days the chance rises to about 50%, and over a week to about 80%, if each day is a fresh chance.
September
In that month about 30% of wildlife watchers report a Southern Beardless-Tyrannulet in Rio de Janeiro on a given day, against about 10% in March and December, the lowest months. That is one of Rio de Janeiro's driest months, with about 70 mm of rain against 230 mm in December.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Southern Beardless-Tyrannulet sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
9th of 38
Of the 38 cities where we can rate Southern Beardless-Tyrannulet sightings, Rio de Janeiro ranks 9th at about 20%. The best odds are in Lima (Peru, about 40%), Quito (Ecuador, about 40%) and Guayaquil (Ecuador, about 40%).
Same family: Tyrannidae
The closest relatives of the Southern Beardless-Tyrannulet that you can see in Rio de Janeiro (family Tyrannidae, Tyrant Flycatchers) are Great Kiskadee (about 90%), Tropical Kingbird (about 70%) and Masked Water-Tyrant (about 70%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Southern Beardless-Tyrannulet is recorded against all the birds logged in Rio de Janeiro (711 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.
