Threnetes leucurus
Silhouette: Ferran Sayol · PhyloPic
In 3 days ~10%
The pale-tailed barbthroat (Threnetes leucurus) is a species of hummingbird in the family Trochilidae. It is found throughout much of the Amazon Basin from the eastern Andean foothills to the Atlantic Ocean. The pale-tailed barbthroat was formally described by the Swedish naturalist Carl Linnaeus in 1766 in the twelfth edition of his Systema Naturae under the binomial name Trochilus leucurus. Linnaeus based his short description on the "white-tailed humming-bird" that had been described and illustrated by the English naturalist George Edwards in 1758. The type locality is Suriname. The specific epithet is from the Ancient Greek leukouros meaning "white-tailed". The pale-tailed barbthroat is now placed in the genus Threnetes that was introduced in 1852 by the English ornithologist John Gould.
Four subspecies are recognised: The taxonomy of the pale-tailed and sooty barbthroat (T. niger) complex is unsettled. The two were originally described as separate species, then combined under the name pale-tailed barbthroat but with the binomial... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Manu National Park | 🇵🇪 Peru | |
| 2 | Podocarpus National Park | 🇪🇨 Ecuador | |
| 3 | Tambopata National Reserve | 🇵🇪 Peru | |
| 4 | Yasuní National Park | 🇪🇨 Ecuador | |
| 5 | Amacayacu National Natural Park | 🇨🇴 Colombia |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Belém | 🇧🇷 Brazil |
Rare
Under 5% of wildlife watchers report a Pale-tailed Barbthroat sighting in Belém on a given day, based on 5 verified sightings from GBIF citizen-science data. It is the 135th most-seen of the 144 birds we can rate there. Over three days the chance rises to about 10%, if each day is a fresh chance.
October to December
In those months about 10% of wildlife watchers report a Pale-tailed Barbthroat in Belém on a given day, against under 5% in January to September, the lowest months. Those are among Belém's driest months, with about 110 mm of rain a month against 440 mm in March.
Between 7 and 10 am
Across all the parks we cover, that three-hour window holds the most Pale-tailed Barbthroat 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 Belém, in our data
Belém is the only city on Wallace's Line with enough records to rate Pale-tailed Barbthroat sightings: under 5% of wildlife watchers there report one on a given day.
Same family: Trochilidae
The closest relatives of the Pale-tailed Barbthroat that you can see in Belém (family Trochilidae, Hummingbirds) are Black-throated Mango (about 60%), Blue-chinned Sapphire (about 30%) and Rufous-breasted Hermit (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Pale-tailed Barbthroat is recorded against all the birds logged in Belém (5 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.
