White-faced Partridge vs Ferruginous Partridge
Arborophila orientalis compared with Caloperdix oculeus
Side-by-Side Comparison
| Attribute | White-faced Partridge | Ferruginous Partridge |
|---|---|---|
| Scientific Name | Arborophila orientalis | Caloperdix oculeus |
| Order | Galliformes | Galliformes |
| Family | Phasianidae | Phasianidae |
| Conservation Status | Vulnerable | Near Threatened |
| Length | — | — |
| Wingspan | 28.5 cm (11.2 in) | 28.3 cm (11.1 in) |
| Weight | 310.5 g (10.95 oz) | 210.5 g (7.43 oz) |
| Diet | Eats seeds, invertebrates, and small fruits on floor of East Javan and Balinese montane forests. … | Eats seeds, invertebrates, and small fruits on floor of Southeast Asian lowland and hill forests. … |
| Clutch Size | 2-4 | 8-10 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
White-faced Partridge
Rising 'wheee-oo' whistle with clean, flute-like quality; calls from E Java mountains at dusk and dawn. Alarm produces sharp abrupt chips. Covey contact maintained with low rolling clucks.
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.
Geographic Range & Migration
White-faced Partridge
Endemic to the Lesser Sunda Islands of eastern Java, Bali, and Lombok. Found in montane and lowland forest.
Ferruginous Partridge
Resident in lowland rainforest of the Thai-Malay Peninsula, Sumatra, and Borneo. Found in flat or gently sloping lowland forest.
Conservation Status
White-faced Partridge
Ferruginous Partridge
How to Tell Them Apart
White-faced Partridge
Brown above; face and throat strikingly white contrasting with dark crown and neck; breast grey; flanks olive-grey streaked white; bare reddish eye-ring; extensive white on face is immediately distinctive.
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.
About These Birds
White-faced Partridge
A medium-sized partridge (~310 g) of family Phasianidae, with a distinctive white face and scaly brown upperparts. Found in montane forests of eastern Java and Bali. Inhabits highland broadleaved forest at 800–2,500 m elevation. Forages secretively on the forest floor for seeds and invertebrates. Vulnerable; restricted to a small area of eastern Java and Bali with ongoing deforestation.
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.