Taiwan Partridge vs Ferruginous Partridge
Arborophila crudigularis compared with Caloperdix oculeus
Side-by-Side Comparison
| Attribute | Taiwan Partridge | Ferruginous Partridge |
|---|---|---|
| Scientific Name | Arborophila crudigularis | Caloperdix oculeus |
| Order | Galliformes | Galliformes |
| Family | Phasianidae | Phasianidae |
| Conservation Status | Least Concern | Near Threatened |
| Length | — | — |
| Wingspan | 27.4 cm (10.8 in) | 28.3 cm (11.1 in) |
| Weight | 261.5 g (9.22 oz) | 210.5 g (7.43 oz) |
| Diet | Forages on floor of Taiwanese montane forests for seeds, invertebrates, and small fruits. Scratches leaf … | Eats seeds, invertebrates, and small fruits on floor of Southeast Asian lowland and hill forests. … |
| Clutch Size | 6-8 | 8-10 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Taiwan Partridge
Clear two-syllable whistle 'kwee-OO' rising then falling; repeated steadily for minutes from Taiwanese mountain forest. Alarm produces sharp 'kek' notes; pairs duet at dawn chorus.
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
Taiwan Partridge
Endemic to Taiwan at 200-2,000 m. Found in subtropical and montane forest. Largely resident.
Ferruginous Partridge
Resident in lowland rainforest of the Thai-Malay Peninsula, Sumatra, and Borneo. Found in flat or gently sloping lowland forest.
Conservation Status
Taiwan Partridge
Ferruginous Partridge
How to Tell Them Apart
Taiwan Partridge
Brown above streaked black and buff; bare red around eye; throat pinkish-buff with dark scaling; breast grey with chestnut mottling; flanks grey streaked white. Endemic to Taiwan; moderate patterning.
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
Taiwan Partridge
A medium-sized partridge (~260 g) of family Phasianidae, with reddish-orange throat, dark brown upperparts, and scaly underparts. Endemic to the montane forests of Taiwan at 500–2,800 m elevation. Forages on the forest floor for seeds, berries, and invertebrates. Least Concern; Taiwan's mountain forests are well protected, supporting stable populations of this island endemic.
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.