Lalage atrovirens
Silhouette: PhyloPic
In 3 days ~20% in a week ~30%
The black-browed triller (Lalage atrovirens) is a species of bird in the family Campephagidae. It is found in northern New Guinea. Its natural habitats are subtropical or tropical moist lowland forests and subtropical or tropical mangrove forests. The Biak triller (L. leucoptera) was formerly considered a subspecies. It is very vocal, and often travels in flocks with other species. Like many bird species of New Guinea, very little is known about it. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Raja Ampat | 🇮🇩 Indonesia |
More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Black-browed Triller sighting in Raja Ampat on a given day, based on 66 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 117th most-seen of the 200 birds we can rate there. Over three days the chance rises to about 20%, and over a week to about 30%, if each day is a fresh chance.
November
In that month about 20% of wildlife watchers report a Black-browed Triller in Raja Ampat on a given day, against under 5% in April–September and December–February, the lowest months.
Between 6 and 9 am
Across all the parks we cover, that three-hour window holds the most Black-browed Triller 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 Raja Ampat, in our data
Raja Ampat is the only park on Wallace's Line with enough records to rate Black-browed Triller sightings: about 10% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Black-browed Triller is recorded against all the birds logged in Raja Ampat (66 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.
