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)
Pelecaniformes
Threskiornithidae
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

Common Crane

Common Crane

Grus grus

Generally uncommon in open, mainly wild country. Breeds from reedy lakeshores to boggy clearings in boreal forest, winters in wetlands and farmland. Very large and tall, with distinctive "bustle" on lower back. Adult has black-and-white head pattern, small red crown patch. Flight unhurried, with neck outstretched (unlike herons), and stiff wingbeats quickest on upstroke; groups often fly in V-formation, like geese. Loud, rolling calls carry long distances.

Bonaparte's Gull

Bonaparte's Gull

Chroicocephalus philadelphia

The most common small gull through most of North America, especially inland. Breeding adults have a black head, thin white eye arcs, bright red legs, light gray upperparts, and black wingtips. Note distinctive wing pattern on adults in flight: white wedge on the leading edge of the wing, with small black tips on the outer wing feathers. Nonbreeding adults and immatures have pinkish legs and a mostly white head with black ear spot. Immatures are more heavily marked with brown and black on the wings. Breeds near water in boreal forest; the only gull that makes a stick nest in a tree. Often seen in large flocks along beaches, bays, coves, and lakes during migration and winter. Feeds on small fish and invertebrates, often gracefully fluttering around and picking them off the water surface.

Rufous-capped Motmot

Rufous-capped Motmot

Baryphthengus ruficapillus

Large odd-looking bird with a long tail often swung from side to side or even held cocked when agitated. Usually sits quietly in the midstory and is easy to miss. The body is blue and green, with a black mask, and an orange cap and belly. Normally vocalizes at dawn and dusk an owl-like “hoo-oo-oo-oo-oo.” Nests in burrows.

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