Camptostoma obsoletum
Silhouette: Emily Willoughby · PhyloPic
In 3 days ~40% in a week ~60%
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 |
With luck
About 10% of wildlife watchers report a Southern Beardless-Tyrannulet sighting in Brownsberg Nature Park on a given day, based on 34 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 109th most-seen of the 221 birds we can rate there. Over three days the chance rises to about 40%, and over a week to about 60%, if each day is a fresh chance.
December
In that month about 40% of wildlife watchers report a Southern Beardless-Tyrannulet in Brownsberg Nature Park on a given day, against about 10% in January–February, April and August–October, the lowest months. May to July have too few records to rate.
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.
19th of 40
Of the 40 parks where we can rate Southern Beardless-Tyrannulet sightings, Brownsberg Nature Park ranks 19th at about 10%. The best odds are in Machalilla National Park (Ecuador, about 30%), Serra da Canastra National Park (Brazil, about 30%) and Chapada Diamantina National Park (Brazil, about 30%).
Same family: Tyrannidae
The closest relatives of the Southern Beardless-Tyrannulet that you can see in Brownsberg Nature Park (family Tyrannidae, Tyrant Flycatchers) are Rusty-margined Flycatcher (about 40%), Slender-footed Tyrannulet (about 40%) and McConnell's Flycatcher (about 20%), 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 Brownsberg Nature Park (34 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.
