Oriolus traillii
Silhouette: L. Shyamal · PhyloPic
In 3 days ~40% in a week ~70%
The maroon oriole (Oriolus traillii) is a species of bird in the family Oriolidae. It is found in Southeast Asia. The maroon oriole was originally described in the genus Pastor. Along with the black, black-and-crimson and silver orioles, it belongs to a clade of red and black orioles.
Four subspecies are recognised: The silver oriole of southern China was originally described by Stresemann as another subspecies of maroon oriole, but is now treated as a separate species; it is very similar, except that the red in the body plumage of the maroon oriole is replaced by silvery white. Genetic evidence has now shown that Stresemann's original assessment was accurate, with silver oriole genetically embedded among the subspecies of maroon oriole; the nominate subspecies of maroon oriole is more closely related to silver oriole, than it is to any of the other maroon oriole subspecies. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Namdapha National Park | 🇮🇳 India | |
| 2 | Royal Manas National Park | 🇧🇹 Bhutan | |
| 3 | Doi Inthanon National Park | 🇹🇭 Thailand | |
| 4 | Manas National Park | 🇮🇳 India | |
| 5 | Jim Corbett National Park | 🇮🇳 India | |
| 6 | Langtang National Park | 🇳🇵 Nepal | |
| 7 | Cuc Phuong National Park | 🇻🇳 Vietnam | |
| 8 | Taroko National Park | 🇹🇼 Taiwan | |
| 9 | Kaziranga National Park | 🇮🇳 India | |
| 10 | Chitwan National Park | 🇳🇵 Nepal |
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | 新光動物園 | 🇹🇼 Taiwan |
Possible
About 20% of wildlife watchers report a Maroon Oriole sighting in Manas National Park on a given day, based on 244 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 97th most-seen of the 377 birds we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.
February
In that month about 30% of wildlife watchers report a Maroon Oriole in Manas National Park on a given day, against under 5% in April, June and October, the lowest months. That is one of Manas National Park's driest months, with about 40 mm of rain against 1070 mm in June.
Between 5 and 8 am
Across all the parks we cover, that three-hour window holds the most Maroon Oriole sightings with a recorded time, and about half of them come between 6 pm and 6 am: it is most active around dawn and dusk.
4th of 10
Of the 10 parks where we can rate Maroon Oriole sightings, Manas National Park ranks 4th at about 20%. The best odds are in Namdapha National Park (India, about 30%), Royal Manas National Park (Bhutan, about 30%) and Doi Inthanon National Park (Thailand, about 20%).
GBIF citizen-science records
It is estimated from how often the Maroon Oriole is recorded against all the birds logged in Manas National Park (244 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.
