Tropicoperdix charltonii
Silhouette: Reichenbach · PhyloPic
In 3 days ~40% in a week ~70%
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 Kinabatangan Wildlife Sanctuary on a given day, based on 385 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 59th most-seen of the 231 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.
March
In that month about 30% of wildlife watchers report a Chestnut-necklaced Hill Partridge in Kinabatangan Wildlife Sanctuary on a given day, against about 10% in January–February and November, the lowest months.
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, Kinabatangan Wildlife Sanctuary ranks 3rd at about 20%, level with the leaders once rounded. The best odds are in Danum Valley Conservation Area (Malaysia, about 20%) and Sepilok (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 Kinabatangan Wildlife Sanctuary (385 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.
