Camera-trap footage in Sumatra recorded an adult female and chicks. The chicks had rufous down and pale bellies, with spots decreasing as they grew.
In Sumatra camera footage, chicks had dark rufous down, pale bellies, and light tan tips on the wing coverts that gave a speckled appearance. About a month later they were 60–70% of adult female size, darker chestnut, and less spotted.
Black Partridges inhabit forests of the Malay Peninsula, Sumatra and Borneo, including seasonally flooded peat-swamp forest on Sumatra. Adults produce short calls and whistle-like sounds amid the dense vegetation.
A 2024 paper examined camera videos and sound recorded on Sumatra’s Kampar Peninsula in 2017–18. Nine videos totalling three minutes were used for vocal analysis. Footage from 18 March 2018 matched an adult male’s bill movements to the sounds, confirming that he was calling.
The male’s recordings contained several short call forms and a whistle-like sound. He called when no female or chicks were apparent nearby. Alongside sounds recorded from family groups, these solitary-male recordings revealed more of the species’ vocal variety.
IUCN Red List · Vulnerable · Global
BirdLife’s latest global assessment, dated 2021, lists Black Partridge as Vulnerable with a decreasing trend. Plantation conversion, forest loss and fragmentation, and logging are major threats. Proposed actions include surveys of remaining forest, protection of key populations and better call recordings to aid detection.