Great-billed Heron
Ardea sumatrana
Large plain heron. Dark gray overall with a paler, more brownish neck. Lacks the black head and neck markings of the slightly smaller Gray Heron. Tends to be solitary, only rarely seen in small flocks. Typically restricted to the coast, where it inhabits mangroves, lagoons, and offshore islands, but infrequently seen inland. Rather vocal for a heron, often giving a deep, horrifically resonant roar when flushed or on the nest.
识别特征
The great-billed heron is a large bird, typically standing 115 cm (45 in) tall and weighing up to 2.6 kg (5.7 lb). It is larger than the purple heron, which it resembles in appearance, although it is larger and darker. The plumage is largely dark grey above. In flight, it has a uniform dark grey upperwing.<p>The flight is slow, with its neck retracted. This is characteristic of herons and bitterns, and distinguishes them from storks, cranes and spoonbills, which extend their necks. The species feeds in shallow water, spearing fish with its long, sharp bill. It will wait motionless for prey, or slowly stalk its victim.
分类信息
- 学名
- Ardea sumatrana
- 命名信息
- Raffles, 1822
- 目
- Pelecaniformes
- 科
- Ardeidae
- 属
- Ardea
分布与栖息地
The great-billed heron has a very large range, occurring in much of coastal Southern Asia and Australasia including Australia, India, Indonesia, Malaysia, and the Philippines. Its habitats are largely coastal such as islands, coral reefs, mangroves, large rivers. However, occasionally, it can be found inland in shallow ponds.<p>It is considered to be native in Queensland, Australia.
- 迁徙
- Resident species
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Russet Nightingale-Thrush
Catharus occidentalis
Small, plain-breasted thrush of highland pine-oak forests. Feeds mainly on the ground, but also in fruiting bushes and trees. Sings from low to middle level perches, usually well hidden. Most often seen early and late in the day, hopping along the side of quiet roads and paths. Very similar to Orange-billed and Ruddy-capped nightingale-thrushes. On Russet, note pale pinkish underside of bill with dark tip and faintly mottled or streaked pattern to breast. Song distinctive: repeated thin and tinny phrases.
Gray-hooded Flycatcher
Mionectes rufiventris
Small flycatcher that is largely olive above and cinnamon below with a gray head. The bill is two-toned with a pale base. Found in the understory of humid forests, second growth, and forests edges. Males may display in groups giving a low nasal “bayo” song.
Samoan Myzomela
Myzomela nigriventris
A small, strikingly plumaged myzomela with a bright crimson-red head, chest, back, and rump and black wings, belly, and tail. Thin bill decurved. Female mostly grayish-olive with a bright red rump. Prefers forest habitats, but widespread. Unique coloration of both sexes should identify this species with certainty. Vocally shy. Common call is a high-pitched, insect-like “tseet.”
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