Thalurania furcata
Silhouette: Andy Wilson · PhyloPic
In 3 days ~10% in a week ~20%
The fork-tailed woodnymph (Thalurania furcata) is a species of hummingbird in the "emeralds", tribe Trochilini of subfamily Trochilinae. It is found in every mainland South American country except Chile and Uruguay. The fork-tailed woodnymph was formally described in 1788 by the German naturalist Johann Friedrich Gmelin in his revised and expanded edition of Carl Linnaeus's Systema Naturae. He placed it with all the other hummingbirds in the genus Trochilus and coined the binomial name Trochilus furcatus. The fork-tailed woodnymph is now placed with three other woodnymphs in the genus Thalurania that was introduced in 1848 by the English ornithologist John Gould. The genus name combines the Ancient Greek thalos meaning "child" with ouranos meaning "heaven". The specific epithet furcata is from Medieval Latin furcatus meaning "forked".
Thirteen subspecies of fork-tailed woodnymph are recognised: Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Brownsberg Nature Park | 🇸🇷 Suriname | |
| 2 | Chapada dos Guimarães National Park | 🇧🇷 Brazil | |
| 3 | Amboró National Park | 🇧🇴 Bolivia | |
| 4 | Manu National Park | 🇵🇪 Peru | |
| 5 | Podocarpus National Park | 🇪🇨 Ecuador | |
| 6 | Emas National Park | 🇧🇷 Brazil | |
| 7 | Tambopata National Reserve | 🇵🇪 Peru | |
| 8 | Serra da Canastra National Park | 🇧🇷 Brazil | |
| 9 | Yasuní National Park | 🇪🇨 Ecuador | |
| 10 | Amacayacu National Natural Park | 🇨🇴 Colombia | |
| 11 | Parque Estadual Encontro das Águas | 🇧🇷 Brazil | |
| 12 | Sierra de la Macarena National Park | 🇨🇴 Colombia | |
| 13 | Anavilhanas National Park | 🇧🇷 Brazil | |
| 14 | Chapada Diamantina National Park | 🇧🇷 Brazil | |
| 15 | Cuyabeno Wildlife Reserve | 🇪🇨 Ecuador |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Campo Grande | 🇧🇷 Brazil | |
| 2 | Belo Horizonte | 🇧🇷 Brazil | |
| 3 | Goiânia | 🇧🇷 Brazil | |
| 4 | Brasilia | 🇧🇷 Brazil |
Rare
Under 5% of wildlife watchers report a Fork-tailed Woodnymph sighting in Anavilhanas National Park on a given day, based on 12 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 231st most-seen of the 291 birds we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
July, September and November
In those months about 10% of wildlife watchers report a Fork-tailed Woodnymph in Anavilhanas National Park on a given day, against under 5% in August, October and December–June, the lowest months. Those are among Anavilhanas National Park's driest months, with about 120 mm of rain a month against 340 mm in March.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Fork-tailed Woodnymph sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
13th of 15
Of the 15 parks where we can rate Fork-tailed Woodnymph sightings, Anavilhanas National Park ranks 13th at under 5%. The best odds are in Brownsberg Nature Park (Suriname, about 60%), Chapada dos Guimarães National Park (Brazil, about 30%) and Amboró National Park (Bolivia, about 30%). All parks ranked.
Same family: Trochilidae
The closest relatives of the Fork-tailed Woodnymph that you can see in Anavilhanas National Park (family Trochilidae, Hummingbirds) are Streak-throated Hermit (about 30%), Glittering-throated Emerald (about 10%) and Blue-chinned Sapphire (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Fork-tailed Woodnymph is recorded against all the birds logged in Anavilhanas National Park (12 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.
