Crested Partridge vs Udzungwa Forest-partridge
Rollulus rouloul comparado com Xenoperdix udzungwensis
Side-by-Side Comparison
| Atributo | Crested Partridge | Udzungwa Forest-partridge |
|---|---|---|
| Nome científico | Rollulus rouloul | Xenoperdix udzungwensis |
| Ordem | Galliformes | Galliformes |
| Família | Phasianidae | Phasianidae |
| Estado de conservação | Vulnerable | Endangered |
| Comprimento | — | — |
| Envergadura | 27,2 cm (10.7 in) | 28,8 cm (11.3 in) |
| Peso | 250,5 g (8.84 oz) | 207,25 g (7.31 oz) |
| Dieta | Forages on floor of Southeast Asian lowland rainforests for seeds, fallen fruits, and invertebrates. Scratches … | Forages on floor of Udzungwa Tanzanian montane forest for seeds, invertebrates, and small fruits. Critically … |
| Tamanho da postura | 4-6 | 3 |
| Population Trend | — | — |
Habitat Comparison
Habitats partilhados
Crested Partridge only
Udzungwa Forest-partridge only
Nenhum
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.
Udzungwa Forest-partridge
Loud, clear whistled 'wheee-oo' calls from montane forest floor; haunting and infrequently heard. Alarm is a sharp explosive 'kek'; poorly known due to rarity in Udzungwa Mountains.
Geographic Range & Migration
Crested Partridge
Resident in lowland and foothill rainforest of Myanmar, Thailand, Malaysia, Sumatra, and Borneo. Found below 1,500 m.
Udzungwa Forest-partridge
Endemic to the Udzungwa Mountains of Tanzania. Found in montane forest at 1,000-2,000 m. Very poorly known; only two specimens collected.
Estado de conservação
Crested Partridge
Udzungwa Forest-partridge
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 …
Udzungwa Forest-partridge
Brown above with fine black streaking and white shaft-streaks; red legs and bill; underparts paler buff-brown with dark-edged feathers creating scaled pattern; bare red facial skin around eye.
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.
Udzungwa Forest-partridge
A small partridge (~205 g) of family Phasianidae, with brown-streaked plumage and red legs. Endemic to the Eastern Arc Mountains of Tanzania, restricted to Udzungwa and Rubeho mountain forests above 1,300 m. Forages on the forest floor for seeds and invertebrates. Endangered; one of Africa's rarest birds, confined to a tiny forest area threatened by agricultural encroachment and logging.