White-tailed Ptarmigan vs Crested Partridge
Lagopus leucura compared with Rollulus rouloul
Side-by-Side Comparison
| Attribute | White-tailed Ptarmigan | Crested Partridge |
|---|---|---|
| Scientific Name | Lagopus leucura | Rollulus rouloul |
| Order | Galliformes | Galliformes |
| Family | Phasianidae | Phasianidae |
| Conservation Status | Least Concern | Vulnerable |
| Length | — | — |
| Wingspan | 34.6 cm (13.6 in) | 27.2 cm (10.7 in) |
| Weight | 361.8 g (12.76 oz) | 250.5 g (8.84 oz) |
| Diet | Eats alpine willow and heather buds and leaves; switches to berries and insects in summer. … | Forages on floor of Southeast Asian lowland rainforests for seeds, fallen fruits, and invertebrates. Scratches … |
| Clutch Size | 2-9 | 4-6 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
White-tailed Ptarmigan
Soft, chicken-like clucking 'ko-ko-ko'; quiet relative to other ptarmigan. Alarm is a sharp 'kek' series. Males give low, croaking calls on alpine tundra at dawn. Flock contact is muted burbling.
Crested Partridge
High-pitched, thin whistled 'seee' repeated persistently; metallic and insect-like. Males call from forest floor, rarely seen. Alarm is an explosive low grunt followed by rapid wing beats.
Geographic Range & Migration
White-tailed Ptarmigan
Breeds in alpine tundra from Alaska south through the Rockies to New Mexico. Largely resident, descending to lower elevations in winter.
Crested Partridge
Resident in lowland and foothill rainforest of Myanmar, Thailand, Malaysia, Sumatra, and Borneo. Found below 1,500 m.
Conservation Status
White-tailed Ptarmigan
Crested Partridge
How to Tell Them Apart
White-tailed Ptarmigan
Crested Partridge
Male is dark glossy green-black with vivid red-crimson erectile crest; red orbital skin; chestnut wings. Female is entirely bright emerald green with brown wings, red legs, and grey head; among …
About These Birds
White-tailed Ptarmigan
The smallest ptarmigan (~360 g) of family Phasianidae; the only ptarmigan with a white tail year-round. Inhabits alpine tundra and rocky slopes above treeline in the Rocky Mountains from Alaska to New Mexico. Plumage turns all-white in winter for camouflage. Feeds on willows, sedges, and berries. Least Concern; well adapted to extreme mountain environments but vulnerable to climate warming.
Crested Partridge
A small partridge (~250 g) of family Phasianidae, males with vivid crimson crest and iridescent green plumage. Found in lowland tropical rainforests of Southeast Asia including Thailand, Malaysia, Sumatra, and Borneo. Forages on the forest floor for fallen seeds, fruits, and invertebrates. Vulnerable; dependent on primary lowland forest, heavily impacted by deforestation and palm oil expansion.