Tropicoperdix charltonii
Silhouette: Reichenbach · PhyloPic
In 3 days ~50% in a week ~80%
The chestnut-necklaced partridge (Tropicoperdix charltonii) is a species of bird in the family Phasianidae. It is found in forests in the Malay Peninsula and Sumatra. It is threatened by habitat loss and trapping. The International Union for Conservation of Nature (IUCN) has assessed it as vulnerable.
This species was described by Thomas Campbell Eyton as Perdix Charltonii in 1845. Some authorities have considered the green-legged partridge (A. chloropus) to be conspecific with this species. The Sabah partridge (T. graydoni) was also previously considered conspecific.
The chestnut-necklaced partridge is 26–32 cm (10–13 in) long. The male weighs about 290 g (10 oz) and the female weighs about 250 g (8.8 oz). The crown and nape are brown, with dark speckles. The whitish supercilium, throat and neck have brown streaks. The upper breast is chestnut, with a blackish collar above it. The lower breast is brown, and the belly and flanks are buff. There are dark scales on the lower breast and flanks. The upperparts are brown, finely marked... Wikipedia →
Recording0:39
Malaysia · 2025
© Greg Boreham · iNaturalist · CC BY-NC 4.0
Recording0:56
Malaysia · 2023
© Daan Drukker · Observation.org, Nature data from around the World · CC BY-NC-ND 4.0
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Danum Valley Conservation Area | 🇲🇾 Malaysia | |
| 2 | Sepilok | 🇲🇾 Malaysia | |
| 3 | Kinabatangan Wildlife Sanctuary | 🇲🇾 Malaysia | |
| 4 | Kinabalu Park | 🇲🇾 Malaysia |
Possible
About 20% of wildlife watchers report a Chestnut-necklaced Hill Partridge sighting in Sepilok on a given day, based on 539 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 66th most-seen of the 242 birds we can rate there. Over three days the chance rises to about 50%, and over a week to about 80%, if each day is a fresh chance.
July, September–October and December
In those months about 30% of wildlife watchers report a Chestnut-necklaced Hill Partridge in Sepilok on a given day, against under 5% in January, the lowest month.
Between midnight and 3 am
Across all the parks we cover, that three-hour window holds the most Chestnut-necklaced Hill Partridge sightings with a recorded time, and about 7 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.
Among the best
Of the 4 parks where we can rate Chestnut-necklaced Hill Partridge sightings, Sepilok ranks 2nd at about 20%, level with the leaders once rounded. The best odds are in Danum Valley Conservation Area (Malaysia, about 20%).
GBIF citizen-science records
It is estimated from how often the Chestnut-necklaced Hill Partridge is recorded against all the birds logged in Sepilok (539 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.
