Bearded Wood-partridge vs Nahan's Partridge
Dendrortyx barbatus в сравнении с Ptilopachus nahani
Side-by-Side Comparison
| Характеристика | Bearded Wood-partridge | Nahan's Partridge |
|---|---|---|
| Научное название | Dendrortyx barbatus | Ptilopachus nahani |
| Отряд | Galliformes | Galliformes |
| Семейство | Odontophoridae | Odontophoridae |
| Охранный статус | Vulnerable | Vulnerable |
| Длина | — | — |
| Размах крыльев | 30,1 cm (11.9 in) | 26,8 cm (10.6 in) |
| Масса | 407,5 g (14.37 oz) | 278,5 g (9.82 oz) |
| Питание | Forages in Mexican cloud forests for seeds, invertebrates, and small fruits. Critically endangered; diet poorly … | Forages in Ugandan and Congolese rainforest understorey for invertebrates and seeds. Little-studied; diet poorly documented. |
| Размер кладки | 4-8 | 4 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Bearded Wood-partridge
Emits a loud, resonant hooting call similar to other Dendrortyx wood-partridges. The owl-like hooting carries through cloud forest; calls are poorly differentiated from Long-tailed.
Nahan's Partridge
Produces a soft, repeated whistled call and quiet clucking series. Calls are poorly documented; this Vulnerable forest partridge is secretive on Uganda's forest floor.
Geographic Range & Migration
Bearded Wood-partridge
Endemic to cloud forest in the Sierra de Juárez, Oaxaca, Mexico, and adjacent Veracruz at 1,500-2,500 m. Rarely observed.
Nahan's Partridge
Resident in the rainforests of Uganda and adjacent Democratic Republic of Congo. Found in lowland and foothill rainforest. Poorly known.
Охранный статус
Bearded Wood-partridge
Nahan's Partridge
How to Tell Them Apart
Bearded Wood-partridge
Rufous-brown above; grey head with white supercilium; distinct black-and-white beard streaks on lower throat and chin; breast streaked black and white; flanks rufous-brown; belly pale buff.
Nahan's Partridge
Dark brown overall, finely barred and streaked buff; underparts paler brown with buff streaking; bare reddish eye-ring; tail short and rufous; sexes similar. Forest floor cryptic coloration.
About These Birds
Bearded Wood-partridge
A medium-sized New World quail (~405 g) of family Odontophoridae, with a distinct facial streak resembling a beard. Endemic to cloud forest in a restricted area of the Sierra Madre Oriental of eastern Mexico. Forages on the ground for seeds and invertebrates. Vulnerable; critically restricted range in highly fragmented Mexican highland forests, with ongoing habitat loss from agricultural expansion.
Nahan's Partridge
A small partridge (~280 g) of family Odontophoridae, dark reddish-brown with black barring. Endemic to lowland primary rainforest in Uganda and the Democratic Republic of Congo. Highly terrestrial, foraging on the forest floor for seeds, berries, and invertebrates. Vulnerable; requires intact primary forest and is threatened by widespread logging and agricultural conversion in Central Africa.