Corydon sumatranus
Silhouette: Sheatherius · PhyloPic
In 3 days ~20% in a week ~30%
The dusky broadbill (Corydon sumatranus) is a species of bird in the family Eurylaimidae, the broadbills. It is native to Southeast Asia. It may be slowly declining due to habitat loss, especially from logging, but it has a large enough range that it is still considered to be a least-concern species.
This species, like most in its family, is an insectivore. It is mostly a charcoal gray color with a pale-yellow throat and red bill. It has a brown eye ring. There is a single white band on the wings and some white bands on the underside of the tail. The dusky broadbill is found in moist and dry tropical and subtropical broadleaf forests, tropical swamps, and cloud forests with an upper elevation limit of 2000 metres in Thailand, Myanmar, Laos, Vietnam, Cambodia, and Singapore, as well as the islands of Sumatra and Borneo. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Way Kambas National Park | 🇮🇩 Indonesia | |
| 2 | Khao Luang National Park | 🇹🇭 Thailand | |
| 3 | Kaeng Krachan National Park | 🇹🇭 Thailand | |
| 4 | Danum Valley Conservation Area | 🇲🇾 Malaysia | |
| 5 | Kerinci Seblat National Park | 🇮🇩 Indonesia | |
| 6 | Taman Negara National Park | 🇲🇾 Malaysia | |
| 7 | Kinabatangan Wildlife Sanctuary | 🇲🇾 Malaysia | |
| 8 | Cat Tien National Park | 🇻🇳 Vietnam | |
| 9 | Khao Yai National Park | 🇹🇭 Thailand |
With luck
About 10% of wildlife watchers report a Dusky Broadbill sighting in Kerinci Seblat National Park on a given day, based on 40 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 102nd most-seen of the 203 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.
September
In that month about 20% of wildlife watchers report a Dusky Broadbill in Kerinci Seblat National Park on a given day, against under 5% in February–May and July–August, the lowest months. January has too few records to rate.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Dusky Broadbill sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
5th of 9
Of the 9 parks where we can rate Dusky Broadbill sightings, Kerinci Seblat National Park ranks 5th at about 10%. The best odds are in Way Kambas National Park (Indonesia, about 20%), Khao Luang National Park (Thailand, about 20%) and Kaeng Krachan National Park (Thailand, about 10%).
GBIF citizen-science records
It is estimated from how often the Dusky Broadbill is recorded against all the birds logged in Kerinci Seblat National Park (40 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.
