Purple Sunbird

识别特征

This small sunbird has a relatively short bill, a dark and short square ended tail with distinctive sexual dimorphism. Less than 10 cm long they have a down-curved bill with brush-tipped tubular tongues that aid in nectar feeding. The male is glossy metallic bluish to purplish black on the upper parts with the wings appearing dark brown. The breeding male also has underparts of the same purplish black, but non-breeding males may show a central streak of black on yellow underparts. (Birds in this eclipse plumage were once designated as a species, C. currucaria.) In the breeding plumage, the male can be confused with the syntopic Loten's sunbird which has a long bill and a distinctive broad maroon band on the breast. Breeding males will sometimes show their yellow pectoral tufts in displays. There is a patch of bright blue on the shoulder of breeding males. The maroon shine on the feathers of the collar around the neck is visible mainly during the breeding seasons.<p>Females are olive brown above with a yellowish underside. There is a pale supercilium beyond the eye. There is a darkish eye stripe. The throat and breast are yellow, becoming pale towards the vent. The outer tail feathers are tipped in white both in the male and female.The young are just like females in plumage, however, the males get black feathers as they become adults. They are seen in pairs or small groups and aggregations may be found in gardens with suitable flowers. They feed mainly on nectar but also take fruits and insects. Groups of as many as 40 to 50 individuals have sometimes been noted.

分类信息

Genus: Cinnyris; Family: Nectariniidae; Order: Passeriformes.

学名

Cinnyris asiaticus

命名信息

(Latham, 1790)

目

Passeriformes

科

Nectariniidae

属

Cinnyris

分布与栖息地

The species is distributed widely from West Asia through the Indian subcontinent and into Southeast Asia. They are resident birds in most parts of their range and do not move large distances. They are found in thin forest and garden land, including those in dense urban areas. Local movements are, however, noted especially in the drier parts of northwestern India and Pakistan where they are said to arrive in large numbers before summer.<p>The nominate subspecies is distributed in India east of the desert region and south of the Himalayas extending to the west and south of India and Sri Lanka. They are found mainly on the plains but going up to 2400 m in southern India and up to 1700 m in the Himalayas. The race brevirostris is found in the dry zone from the Arabian Peninsula into Iran, Afghanistan, Pakistan until the dry zone of Rajasthan and Gujarat. These may, however, winter south near Goa. This form has a slight tinge of green in the pectoral yellow tufts. The race intermedius extends from the border of Orissa and Andhra Pradesh northwards into Bangladesh, Myanmar and Indochina.<p>The movements of these birds are not well understood. A male ringed in Bharatpur was recovered in Dehra Dun, 350 km north.

迁徙

Resident species

行为

Migration pattern: Resident species.

保护状况

Population trend: stable.

种群趋势

stable