Clamator coromandus
Silhouette: Nicolas Huet le Jeune and Jean-Gabriel Prêtre (vectorized by T. Michael Keesey) · PhyloPic
In 3 days ~10% in a week ~20%
The chestnut-winged cuckoo or red-winged crested cuckoo (Clamator coromandus) is a cuckoo found in Southeast Asia and parts of South Asia. It has dark glossy upperparts, a black head with long crest chestnut wings, a long graduated glossy black tail, rufous throat dusky underside and a narrow white nuchal half collar. They breed along the Himalayas and migrate south in winter to Sri Lanka, southern India and tropical Southeast Asia including parts of Indonesia, Thailand and the Philippines. It is about 47 cm (19 in) long.
This dark and crested cuckoo has chestnut wings, a glossy black crest and a graduated tail (the feathers shortening in steps from the center outwards) whose terminal edges are white and inconspicuous unlike the white tips of the Jacobin cuckoo which is found in parts of its range. The black capping on the head is broken from black of the back by a white collar that extends to the sides of the neck. The lower parts are rufous turning to dark grey towards the vent. Young birds are dusky with a scaly appearance to the wing feathers.
The species was first given its binomial name by Linnaeus in 1766. His description of what he called Cuculus... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Royal Manas National Park | 🇧🇹 Bhutan | |
| 2 | Cat Tien National Park | 🇻🇳 Vietnam | |
| 3 | Kaeng Krachan National Park | 🇹🇭 Thailand | |
| 4 | Manas National Park | 🇮🇳 India | |
| 5 | Wilpattu National Park | 🇱🇰 Sri Lanka | |
| 6 | Yala National Park | 🇱🇰 Sri Lanka | |
| 7 | Periyar National Park | 🇮🇳 India | |
| 8 | Kinabatangan Wildlife Sanctuary | 🇲🇾 Malaysia | |
| 9 | Namdapha National Park | 🇮🇳 India | |
| 10 | Chitwan National Park | 🇳🇵 Nepal | |
| 11 | Doi Inthanon National Park | 🇹🇭 Thailand |
Rare
Under 5% of wildlife watchers report a Chestnut-winged Cuckoo sighting in Kaeng Krachan National Park on a given day, based on 104 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 227th most-seen of the 360 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.
April
In that month about 10% of wildlife watchers report a Chestnut-winged Cuckoo in Kaeng Krachan National Park on a given day, against under 5% in May to March, the lowest months.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Chestnut-winged Cuckoo sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
3rd of 11
Of the 11 parks where we can rate Chestnut-winged Cuckoo sightings, Kaeng Krachan National Park ranks 3rd at under 5%. The best odds are in Royal Manas National Park (Bhutan, about 10%) and Cat Tien National Park (Vietnam, under 5%).
Same family: Cuculidae
The closest relatives of the Chestnut-winged Cuckoo that you can see in Kaeng Krachan National Park (family Cuculidae, Cuckoos) are Greater Coucal (about 40%), Green-billed Malkoha (about 40%) and Asian Koel (about 30%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Chestnut-winged Cuckoo is recorded against all the birds logged in Kaeng Krachan National Park (104 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.
