Ferruginous Partridge vs Black Grouse
Caloperdix oculeus в сравнении с Lyrurus tetrix
Side-by-Side Comparison
| Характеристика | Ferruginous Partridge | Black Grouse |
|---|---|---|
| Научное название | Caloperdix oculeus | Lyrurus tetrix |
| Отряд | Galliformes | Galliformes |
| Семейство | Phasianidae | Phasianidae |
| Охранный статус | Near Threatened | Least Concern |
| Длина | — | — |
| Размах крыльев | 28,3 cm (11.1 in) | 48,1 cm (18.9 in) |
| Масса | 210,5 g (7.43 oz) | 1262,5 g (44.53 oz) |
| Питание | Eats seeds, invertebrates, and small fruits on floor of Southeast Asian lowland and hill forests. … | Feeds on buds, catkins, and shoots of birch and other trees; berries and invertebrates are … |
| Размер кладки | 8-10 | 6-11 |
| Population Trend | — | — |
Habitat Comparison
Общие среды обитания
Ferruginous Partridge only
Нет
Black Grouse only
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.
Black Grouse
Males on lek produce liquid bubbling 'roo-oo-oo' cooing and explosive 'choo-ESH' sneeze calls; haunting at misty dawn. Alarm is harsh cacking. Display carries across moorland and bogs.
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.
Black Grouse
Resident of moorland, bogs, and forest edge across northern and central Eurasia, from Britain east to Siberia and Kazakhstan.
Охранный статус
Ferruginous Partridge
Black Grouse
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.
Black Grouse
Male blue-black with iridescent purple-blue gloss; bold white wing bar; white undertail coverts contrast with black lyre-shaped tail; red wattles above eye. Female mottled tawny-brown with faint barring.
About These Birds
Ferruginous Partridge
A small partridge (~210 g) of family Phasianidae, with rich ferruginous (rust-red) plumage and spotted black-and-white markings. Inhabits lowland and foothill rainforests in Malaysia, Sumatra, and Borneo. Secretive, foraging on the forest floor for seeds and invertebrates. Near Threatened; associated with primary and tall secondary forest, declining with ongoing logging and land conversion.
Black Grouse
A medium-large Phasianidae grouse (~1.26 kg) of Eurasian moorlands and forest edges. Males are glossy blue-black with lyre-shaped tails used in communal lek displays on frost-covered arenas. Females are cryptically brown. Omnivorous; diet includes berries, buds, and invertebrates. Least Concern.