Ferruginous Partridge vs Dulit Partridge
Caloperdix oculeus compared with Rhizothera dulitensis
Side-by-Side Comparison
| Attribute | Ferruginous Partridge | Dulit Partridge |
|---|---|---|
| Scientific Name | Caloperdix oculeus | Rhizothera dulitensis |
| Order | Galliformes | Galliformes |
| Family | Phasianidae | Phasianidae |
| Conservation Status | Near Threatened | Data Deficient |
| Length | — | — |
| Wingspan | 28.3 cm (11.1 in) | 35.8 cm (14.1 in) |
| Weight | 210.5 g (7.43 oz) | 747.6666666666666 g (26.37 oz) |
| Diet | Eats seeds, invertebrates, and small fruits on floor of Southeast Asian lowland and hill forests. … | Omnivorous forest floor forager; takes seeds, fruits, invertebrates, and small vertebrates in Bornean montane forest. |
| 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.
Dulit Partridge
Similar to Long-billed Partridge; 'whurr-WHEEE' whistle slightly higher-pitched and less frequent. Data-deficient Bornean species; poorly documented vocally. Alarm likely a harsh chattering rattle.
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.
Dulit Partridge
Endemic to montane forest on Mount Dulit and adjacent highlands of Sarawak, Borneo, above 900 m elevation.
Conservation Status
Ferruginous Partridge
Dulit 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.
Dulit Partridge
Similar to Long-billed Partridge but male with deep chestnut nape and neck; brown upperparts with darker vermiculations; pale buff-white below with faint flank streaking; yellowish bill with red base.
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.
Dulit Partridge
A poorly known Phasianidae partridge (~748 g) restricted to montane forests of central Borneo, including the Dulit Range. Very few specimens have been collected; biology largely undescribed. Forages on forest floor for seeds and invertebrates. Data Deficient due to extreme scarcity of records.