Ferruginous Partridge vs Chestnut-necklaced Partridge
Caloperdix oculeus compared with Tropicoperdix charltonii
Side-by-Side Comparison
| Attribute | Ferruginous Partridge | Chestnut-necklaced Partridge |
|---|---|---|
| Scientific Name | Caloperdix oculeus | Tropicoperdix charltonii |
| Order | Galliformes | Galliformes |
| Family | Phasianidae | Phasianidae |
| Conservation Status | Near Threatened | Vulnerable |
| Length | — | — |
| Wingspan | 28.3 cm (11.1 in) | — |
| Weight | 210.5 g (7.43 oz) | 270.0 g (9.52 oz) |
| Diet | Eats seeds, invertebrates, and small fruits on floor of Southeast Asian lowland and hill forests. … | Ground forager; eats seeds, berries, invertebrates, and small animals in SE Asian lowland and foothill … |
| Clutch Size | 8-10 | -- |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Ferruginous Partridge
Sharp, staccato 'krik-krik-krik' calls from lowland rainforest; often given in duet. Alarm is a loud, rapid chattering rattle; contact notes between pairs soft and clucking.
Chestnut-necklaced Partridge
Clear, ringing 'wii-OO' whistle from Bornean forest understorey; pure and slightly mournful. Alarm is a sharp explosive 'kek'. Pairs call in loose coordination at dawn. Contact notes low, clucking.
Geographic Range & Migration
Ferruginous Partridge
Resident in lowland rainforest of the Thai-Malay Peninsula, Sumatra, and Borneo. Found in flat or gently sloping lowland forest.
Chestnut-necklaced Partridge
Resident of lowland and hill forest in peninsular Malaysia, Sumatra, and southern Thailand, from sea level to 1,000 m.
Conservation Status
Ferruginous Partridge
Chestnut-necklaced Partridge
How to Tell Them Apart
Ferruginous Partridge
Rich ferruginous (deep rusty-orange) overall; upperparts black-and-rufous barred; flanks black boldly spotted white; bare red facial skin; underparts rufous-orange; one of the most vividly coloured Southeast Asian partridges.
Chestnut-necklaced Partridge
Brown upperparts with dark scaling; broad chestnut pectoral band across buff-white breast; white supercilium; pale orange-buff flanks; green legs. Female paler with narrower or absent chestnut necklace.
About These Birds
Ferruginous Partridge
A small partridge (~210 g) of family Phasianidae, with rich ferruginous (rust-red) plumage and spotted black-and-white markings. Inhabits lowland and foothill rainforests in Malaysia, Sumatra, and Borneo. Secretive, foraging on the forest floor for seeds and invertebrates. Near Threatened; associated with primary and tall secondary forest, declining with ongoing logging and land conversion.
Chestnut-necklaced Partridge
A small Phasianidae partridge (~270 g) of lowland and hill dipterocarp forests in the Thai-Malay Peninsula, Sumatra, and Borneo. Characterised by a chestnut gorget on the upper breast. Forages for seeds and invertebrates in dense understorey. Vulnerable from extensive lowland forest conversion.