Giant Ibis
Pseudibis gigantea
A hulking gray ibis the size of a large goose and with a distinctively long-bodied appearance, this increasingly rare scimitar-billed waterbird is unmistakable in its limited range. Size alone separates this species from other ibises that share its range; also note wrinkly bald head, dark back, and beautifully scalloped wings. Forages singly, in pairs, or in small flocks. Inhabits lowland plains, moving in response to water availability, occasionally gathering at waterholes during especially dry periods. Forages in marshy or flooded openings in wooded areas, and roosts and nests in nearby trees. Gives loud rolling bugles at dawn and dusk.
识别特征
True to its name, it is the largest extant ibis species. Adults are 102–106 cm (40–41.5 in) long and weigh about 4.2 kg (9.3 lb). Among standard measurements, the wing chord is 52.3–57 cm (20.6–22.4 in), the tail is 30 cm (12 in), the tarsus is 11 cm (4.3 in) and the culmen is 20.8–23.4 cm (8.2–9.2 in). The adults have overall dark grayish-brown plumage with a naked, greyish head and upper neck. There are dark bands across the back of the head and shoulder area and the pale silvery-grey wing tips also have black crossbars. The beak is yellowish-brown, the legs are orange, and the eyes are dark red. Juveniles have short black feathers on the back of the head down to the neck, shorter bills and brown eyes.<p>It has a loud, ringing call, frequently repeated around dawn or dusk, a-leurk a-leurk.
分类信息
- 学名
- Pseudibis gigantea
- 命名信息
- (Oustalet, 1877)
- 目
- Pelecaniformes
- 科
- Threskiornithidae
- 属
- Pseudibis
分布与栖息地
The giant ibis is a lowland bird that occurs in marshes, swamps, lakes, wide rivers, flooded plains and semi-open forests as well as pools, ponds and seasonal water-meadows in denser deciduous forest. It generally is found in lowlands. One bird was collected in a Malay paddyfield. Formerly the giant ibis was believed to breed in eastern Thailand, central and northern Cambodia, southern Laos and southern Vietnam. It was still fairly common in the Mekong Delta until the 1920s but is now almost depleted, with a small remnant population breeding in Cambodia, southern Laos and possibly in Vietnam.
- 迁徙
- Resident species
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Marabou Stork
Leptoptilos crumenifer
This huge, macabre-looking stork has a massive dagger-like bill and naked pink head and neck that appear severely sunburned. A white ruff and loose inflatable skin on the neck add to its odd appearance. It soars effortlessly at great heights searching for food; note its white belly in flight. Marabous are equally content in wetlands or in dry bush; they are most frequently encountered lurking near carrion, as they attend kills of major predators and will opportunistically snatch scraps. They also readily scavenge around humans and waste dumps.
Moluccan Myzomela
Myzomela simplex
Small, entirely dark sooty-brown honeyeater. Very plain and lacking any colorful distinctive features. Found on the Indonesian island of Halmahera, as well as smaller adjacent islands. Uses forest and forest edge, in the lowlands and at moderate elevations. Similar to female Black Sunbird, but shows a more strongly downcurved bill, less contrast between the upperparts and underparts, and never shows the yellow tones on the belly usually shown by Black Sunbird.
Rufous-fronted Tailorbird
Orthotomus frontalis
A small, long-billed, long-tailed bird of dense tangled undergrowth in lowland forest. Has olive-green wings, back, and tail, a pale belly, a gray head and chest with streaks, a rufous forehead and mask, and orange legs. Similar in habits and shape to White-browed Tailorbird, but lacks the black head and white brow. Also similar to Phillipine Leaf-Warbler, but has a longer bill and usually cocks its tail. Song is an accelerating series of slightly rising notes ending in a staccato trill.
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