Zimmerius gracilipes
Silhouette: Emily Willoughby · PhyloPic
In 3 days ~40% in a week ~70%
The slender-footed tyrannulet (Zimmerius gracilipes) is a species of bird in the family Tyrannidae, the tyrant flycatchers. It is found in Bolivia, Brazil, Colombia, Ecuador, Peru, and Venezuela. The slender-footed tyrannulet was originally described as Tyranniscus gracilipes. Through much of the twentieth century it and several other tyrannulets were kept in genus Tyranniscus but a study published in 1977 erected the present genus Zimmerius for them.
What are now the red-billed tyrannulet (Z. cinereicapilla) and the Guianan tyrannulet (Z. acer) were previously treated as additional subspecies. The slender-footed tyrannulet is 9 to 12 cm (3.5 to 4.7 in) long and weighs 6.6 to 9.5 g (0.23 to 0.34 oz). The sexes have the same plumage. Adults of the nominate subspecies have a gray forehead and crown. They have a thin whitish supercilium that starts at their lores and a dark stripe through the eye on an otherwise yellowish white face. Their back and rump are dull olive. Their wings are dusky with... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Brownsberg Nature Park | 🇸🇷 Suriname | |
| 2 | Amacayacu National Natural Park | 🇨🇴 Colombia | |
| 3 | Anavilhanas National Park | 🇧🇷 Brazil | |
| 4 | Sierra de la Macarena National Park | 🇨🇴 Colombia | |
| 5 | Yasuní National Park | 🇪🇨 Ecuador | |
| 6 | Cuyabeno Wildlife Reserve | 🇪🇨 Ecuador | |
| 7 | Manu National Park | 🇵🇪 Peru | |
| 8 | Tambopata National Reserve | 🇵🇪 Peru |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Recife | 🇧🇷 Brazil |
Possible
About 20% of wildlife watchers report a Slender-footed Tyrannulet sighting in Amacayacu National Natural Park on a given day, based on 122 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 79th most-seen of the 436 birds we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.
August
In that month about 50% of wildlife watchers report a Slender-footed Tyrannulet in Amacayacu National Natural Park on a given day, against about 10% in February–March, May–June and October–December, the lowest months. That is one of Amacayacu National Natural Park's driest months, with about 160 mm of rain against 390 mm in March.
Between 7 and 10 am
Across all the parks we cover, that three-hour window holds the most Slender-footed Tyrannulet sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
2nd of 8
Of the 8 parks where we can rate Slender-footed Tyrannulet sightings, Amacayacu National Natural Park ranks 2nd at about 20%. The best odds are in Brownsberg Nature Park (Suriname, about 40%).
Same family: Tyrannidae
The closest relatives of the Slender-footed Tyrannulet that you can see in Amacayacu National Natural Park (family Tyrannidae, Tyrant Flycatchers) are Tropical Kingbird (about 40%), Great Kiskadee (about 40%) and Yellow-crowned Tyrannulet (about 30%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Slender-footed Tyrannulet is recorded against all the birds logged in Amacayacu National Natural Park (122 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.
