Zimmerius gracilipes
Silhouette: Emily Willoughby · PhyloPic
In 3 days ~30% in a week ~60%
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 |
With luck
About 10% of wildlife watchers report a Slender-footed Tyrannulet sighting in Recife on a given day, based on 13 verified sightings from GBIF citizen-science data. It is the 53rd most-seen of the 90 birds we can rate there. Over three days the chance rises to about 30%, and over a week to about 60%, if each day is a fresh chance.
May and July
In those months about 20% of wildlife watchers report a Slender-footed Tyrannulet in Recife on a given day, against under 5% in January and November, the lowest months. Those are among Recife's wettest months, with about 200 mm of rain a month against 25 mm in November.
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.
Only Recife, in our data
Recife is the only city on Wallace's Line with enough records to rate Slender-footed Tyrannulet sightings: about 10% of wildlife watchers there report one on a given day.
Same family: Tyrannidae
The closest relatives of the Slender-footed Tyrannulet that you can see in Recife (family Tyrannidae, Tyrant Flycatchers) are Great Kiskadee (about 80%), Masked Water-Tyrant (about 70%) and Social Flycatcher (about 70%), 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 Recife (13 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.
