Aglaiocercus coelestis
Silhouette: Ferran Sayol · PhyloPic
In 3 days ~50% in a week ~80%
The violet-tailed sylph (Aglaiocercus coelestis) is a species of hummingbird in the "coquettes", tribe Lesbiini of subfamily Lesbiinae. It is found in Colombia and Ecuador. The taxonomy of genus Aglaiocercus and of the violet-tailed sylph in particular are complicated. The genus also includes two other sylphs, the long-tailed (A. kingii) and Venezuelan (A. berlepschi), and the three have several times been suggested to be either one species, or two with the violet-tailed being a subspecies of long-tailed. Several additional species have been proposed for inclusion but they have almost conclusively been shown to be hybrids with kingii or one of the other sylphs. Since at least the early 2000s taxonomists have settled on the three-species treatment.
The male long-tailed sylphs are 18 to 21 cm (7.1 to 8.3 in) long including the 10 to 15 cm (3.9 to 5.9 in) outer tail feathers. Females are 9.5 to 9.7 cm (3.7 to 3.8 in) long. The species weighs 4.6 to 5.2 g (0.16 to 0.18 oz). Both subspecies have a short black bill. Males of the nominate subspecies... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Farallones de Cali National Natural Park | 🇨🇴 Colombia |
More parks will be added in future updates.
Possible
About 20% of wildlife watchers report a Violet-tailed Sylph sighting in Farallones de Cali National Natural Park on a given day, based on 663 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 78th most-seen of the 542 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.
January
In that month about 40% of wildlife watchers report a Violet-tailed Sylph in Farallones de Cali National Natural Park on a given day, against about 10% in May–August and October–December, the lowest months.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Violet-tailed Sylph sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Only Farallones de Cali National Natural Park, in our data
Farallones de Cali National Natural Park is the only park on Wallace's Line with enough records to rate Violet-tailed Sylph sightings: about 20% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Violet-tailed Sylph is recorded against all the birds logged in Farallones de Cali National Natural Park (663 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.
