Indian Gray Hornbill

Ocyceros birostris

A small, grayish-brown hornbill with a pale brow, an obvious casque above the bill (larger in males), and a dual-toned black-and-yellow bill. In flight, note the pale edges on the wings and tail, as well as long central tail feathers. When flying, beats its wings rapidly followed by a short glide. Prefers open woodlands, plantations, gardens, and parks in cities where it feeds on large, fruiting trees. Usually seen in pairs or small groups. The calls include a series of short “kek-kek-kek” notes given in flight and a squealing, hawklike high-pitched “kieeeeu” when perched.

识别特征

The Indian grey hornbill is a medium-sized hornbill, measuring around 61 cm (24 in) in length. The upper parts are greyish brown and there is a slight trace of a pale supercilium. The ear coverts are darker. The flight feathers of the wing are dark brown with a whitish tip. The tail has a white tip and a dark subterminal band. They have a red iris and the eyelids have eyelashes. The casque is short and pointed.<p>The male has a larger casque on a dark bill, and the culmen and lower mandible are yellowish. The bare skin around the eye is dark in the male, but sometimes pale reddish in females. The female has a more yellowish bill with black on the basal half and on the casque.The juveniles lack the casque, and the bare skin around the eye is dull orange.

分类信息

Genus: Ocyceros; Family: Bucerotidae; Order: Bucerotiformes.

学名
Ocyceros birostris
命名信息
(Scopoli, 1786)
Bucerotiformes
Bucerotidae
Ocyceros

分布与栖息地

The species is found mainly on the plains up to about 2,000 ft (610 m). It is found from the foothills of the Himalayas southwards, bounded to the west by the Indus system and to the east by the Ganges Delta. It may make local movements in the drier western region. It is found even in cities that have old avenue trees. The species has been observed, usually in pairs, in Dharamsala town (Himachal Pradesh) at about 1500 to 1600 masl during summer and in the rainy season (May to September, 2017). and does not overlap much with the Malabar grey hornbill of the Western Ghats.

迁徙
Resident species

行为

Migration pattern: Resident species.

保护状况

Population trend: stable.

种群趋势
stable

照片

分布

鸟叫声

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