Ferruginous Partridge vs Rock Ptarmigan
Caloperdix oculeus 对比 Lagopus muta
Side-by-Side Comparison
| 属性 | Ferruginous Partridge | Rock Ptarmigan |
|---|---|---|
| 学名 | Caloperdix oculeus | Lagopus muta |
| 目 | Galliformes | Galliformes |
| 科 | Phasianidae | Phasianidae |
| 保护状况 | Near Threatened | Least Concern |
| 体长 | — | — |
| 翼展 | 28.3 cm (11.1 in) | 37.7 cm (14.8 in) |
| 体重 | 210.5 g (7.43 oz) | 608.5 g (21.46 oz) |
| 食性 | Eats seeds, invertebrates, and small fruits on floor of Southeast Asian lowland and hill forests. … | Eats alpine plants, buds, berries, seeds, and lichen; shifts to willow/birch buds in winter when … |
| 产卵数 | 8-10 | 3-11 |
| 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.
Rock Ptarmigan
Males produce a belching, rattling 'er-err-errr-karr' from rocky alpine terrain; deep, guttural, and frog-like. Alarm is sharp 'kek-kek'. Contact calls low and rolling; female clucks softly.
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.
Rock Ptarmigan
Circumpolar resident of Arctic and alpine tundra across North America, Europe, and Asia. Resident or short-distance altitudinal migrant.
保护状况
Ferruginous Partridge
Rock Ptarmigan
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.
Rock Ptarmigan
Seasonally dimorphic: brilliant snow-white in winter with black loral stripe in males; mottled grey-brown and buff in summer with intricate dark vermiculations; females lack black loral mark.
About These Birds
Ferruginous Partridge
锈红山鹑，约210克，锈红色有黑白斑点，分布于马来西亚、苏门答腊和婆罗洲，近危。
Rock Ptarmigan
A medium-sized grouse of the order Galliformes inhabiting arctic and alpine tundra across the Holarctic. Weighing ~609 g, it undergoes three annual moults, turning white in winter for camouflage. Feeds on buds, leaves, and berries. Least Concern.