Pacific Imperial-Pigeon
Ducula pacifica
A large pigeon with a mostly gray body, green wings, and a distinctive and diagnostic black fleshy knob above the bill. Found mostly in inland forest up to around 1000 meters of elevation. Juvenile resembles Island Imperial-Pigeon, but is smaller and overall darker, especially on the wings. Adult is separated from Island Imperial-Pigeon by its black bill knob. Often heard giving an extended, rapidly bubbling “crrrroooooo” call.
识别特征
The Pacific imperial pigeon is 36–41 cm (14–16 in) in overall length and weighs 370–420 g (13–15 oz). The back, tail and wings are blackish-green, the head and neck are light grey. The breast is grey with a pinkish tinge. The undertail coverts are brown. The bill is black with a knob on the upper mantle. The iris is red. The female is slightly smaller. The juvenile lacks the knob on the bill, is duller and lacks the pink on the breast.
分类信息
The Pacific imperial pigeon was formally described in 1789 by the German naturalist Johann Friedrich Gmelin in his revised and expanded edition of Carl Linnaeus's Systema Naturae. He placed it with all the other doves and pigeons in the genus Columba and coined the binomial name Columba pacifica. Gmelin based his description on the "Ferruginous-vented pigeon" from the "Friendly Isles in the South Seas" (now the Tonga Islands in the South Pacific) that had been described in 1783 by English ornithologist John Latham. The Pacific imperial pigeon is now placed with 40 other Imperial pigeons in the genus Ducula that was introduced in 1836 by the English naturalist Brian Houghton Hodgson. The genus name Ducula is from the Latin dux genitive ducis meaning "leader".<p>Two subspecies are recognised:
- 学名
- Ducula pacifica
- 命名信息
- (Gmelin, JF, 1789)
- 目
- Columbiformes
- 科
- Columbidae
- 属
- Ducula
分布与栖息地
Its natural habitats are tropical moist lowland forests on smaller islands and tropical moist montane forest on larger islands. It will travel across parts of its range between islands to forage. Individuals may gather to form large flocks in fruiting trees and travel some distances to forage.
- 迁徙
- Resident species
行为
Migration pattern: Resident species.
保护状况
Population trend: declining.
- 种群趋势
- declining
照片
分布
其他鸟类
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