Myiornis ecaudatus
Silhouette: Emily Willoughby · PhyloPic
In 3 days <5% in a week ~10%
The short-tailed pygmy tyrant (Myiornis ecaudatus) is a species of bird in the family Tyrannidae, the tyrant flycatchers. It is found on Trinidad and in every mainland South American country except Argentina, Chile, Paraguay, and Uruguay.
The short-tailed pygmy tyrant was originally described in 1837 as Todirostrum ecaudatum. In the early to mid-twentieth century it was placed in genus Perissotriccus which was later merged into Myiornis. Several authors have suggested that genus Myiornis should be merged into genus Hemitriccus.
Between about 1940 and 1970 some authors included what is now the black-capped pygmy tyrant (M. atricapillus) as a third subspecies. The short-tailed and black-capped pygmy tyrants apparently form a superspecies. The short-tailed pygmy tyrant is 6 to 7 cm (2.4 to 2.8 in) long and weighs about 4.2 g (0.15 oz). It is the smallest passerine on Earth. The sexes have the same plumage. Adults of the nominate subspecies have a mostly dark gray head with blackish lores, a... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Brownsberg Nature Park | 🇸🇷 Suriname | |
| 2 | Tambopata National Reserve | 🇵🇪 Peru | |
| 3 | Amacayacu National Natural Park | 🇨🇴 Colombia | |
| 4 | Manu National Park | 🇵🇪 Peru | |
| 5 | Sierra de la Macarena National Park | 🇨🇴 Colombia | |
| 6 | Amboró National Park | 🇧🇴 Bolivia | |
| 7 | Yasuní National Park | 🇪🇨 Ecuador |
Rare
Under 5% of wildlife watchers report a Short-tailed Pygmy-Tyrant sighting in Yasuní National Park on a given day, based on 33 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 430th most-seen of the 533 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.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Short-tailed Pygmy-Tyrant in Yasuní National Park on a given day, so our monthly data shows no clear season.
Between 7 and 10 am
Across all the parks we cover, that three-hour window holds the most Short-tailed Pygmy-Tyrant sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
7th of 7
Of the 7 parks where we can rate Short-tailed Pygmy-Tyrant sightings, Yasuní National Park ranks 7th at under 5%. The best odds are in Brownsberg Nature Park (Suriname, about 10%), Tambopata National Reserve (Peru, about 10%) and Amacayacu National Natural Park (Colombia, under 5%).
Same family: Tyrannidae
The closest relatives of the Short-tailed Pygmy-Tyrant that you can see in Yasuní National Park (family Tyrannidae, Tyrant Flycatchers) are Tropical Kingbird (about 50%), Great Kiskadee (about 50%) and Lesser Kiskadee (about 40%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Short-tailed Pygmy-Tyrant is recorded against all the birds logged in Yasuní National Park (33 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.
