Crested Partridge vs Black-billed Capercaillie
Rollulus rouloul comparado con Tetrao urogalloides
Side-by-Side Comparison
| Atributo | Crested Partridge | Black-billed Capercaillie |
|---|---|---|
| Nombre científico | Rollulus rouloul | Tetrao urogalloides |
| Orden | Galliformes | Galliformes |
| Familia | Phasianidae | Phasianidae |
| Estado de conservación | Vulnerable | Least Concern |
| Longitud | — | — |
| Envergadura | 27,2 cm (10.7 in) | 68,2 cm (26.9 in) |
| Peso | 250,5 g (8.84 oz) | 2957,5 g (104.32 oz) |
| Dieta | Forages on floor of Southeast Asian lowland rainforests for seeds, fallen fruits, and invertebrates. Scratches … | Subsists mainly on larch needles in winter; takes berries, buds, and insects during the warmer … |
| Tamaño de la puesta | 4-6 | 5-10 |
| Population Trend | — | — |
Habitat Comparison
Hábitats compartidos
Crested Partridge only
Ninguno
Black-billed Capercaillie only
Ninguno
Song & Call Comparison
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.
Black-billed Capercaillie
Similar to Western Capercaillie but generally higher-pitched; ticking phase faster, grinding phase shorter. Siberian larch forest species. Alarm is a loud bark; females give soft clucking brood calls.
Geographic Range & Migration
Crested Partridge
Resident in lowland and foothill rainforest of Myanmar, Thailand, Malaysia, Sumatra, and Borneo. Found below 1,500 m.
Black-billed Capercaillie
Resident of coniferous taiga in eastern Russia from the Lena River to the Pacific coast, Kamchatka, and northeastern China.
Estado de conservación
Crested Partridge
Black-billed Capercaillie
How to Tell Them Apart
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 …
Black-billed Capercaillie
Male uniformly glossy blue-black with slight greenish sheen on breast; smaller white wing spots than Western Capercaillie; black bill. Female barred rufous-buff and dark brown, paler below than congener.
About These Birds
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.
Black-billed Capercaillie
A very large Phasianidae grouse (~2.96 kg) of Siberian larch and pine forests east of the Yenisei River. Closely related to the Western Capercaillie but distinguished by an all-black bill. Lekking males fan tail feathers dramatically. Feeds on needles and buds; Least Concern.