Kerguelen Shag
Leucocarbo verrucosus
An attractive Southern Ocean crested and pied cormorant with pinkish feet, orange-buff warty caruncles on forehead, and a blue eye-ring, but without white wingbars. Juvenile is duller, lacking facial ornaments. Restricted to a single subantarctic island, Kerguelen, where it is the only cormorant and is commonly seen foraging in inshore waters. Although they do not overlap in range, most other Southern Ocean “blue-eyed” shags are larger, with whiter sides to the head, and many have white wingbars. Call is a grunting wheeze.
识别特征
The Kerguelen shag is 65 cm (25.5 in) long with a wingspan of 110 cm (43.5 in), making it the smallest blue-eyed shag. The adult's upperparts, tail, and thighs are metallic greenish black; the underbody to the throat is white; and the wing linings are brown. Some individuals have white patches on the back and wings. The head and the back of the neck are deep blue or purple, except that a black cap reaches below the eye to the chin and ear coverts. The face and throat pouch are dark brown, ornamented with yellow-orange tubercles. The bill is horn-colored or brown; the eyes are hazel. The legs and feet vary from dark brown to dark-blotched bright pink. Breeding adults have a little black erectile crest on the forehead, yellow or orange caruncles (large warts) above the base of the bill, and a bright blue ring around the eye. After the breeding season, the plumage fades, the eye-ring becomes lead-blue, and the caruncles become smaller and duller-colored.<p>Juveniles are dark brown with varying amounts of white underneath and brown iris, bill, and feet. They have no caruncles, and their eye-rings are lead-blue. They acquire adult plumage gradually.<p>Unlike many cormorants, this species does not spread its wings when it is perched.
分类信息
This species has been placed in genera Halieus, Hypoleucos, Notocarbo, and Leucocarbo. Others place it in the genus Phalacrocorax. It has been considered conspecific with some other blue-eyed shags under the name imperial shag. Here it is considered a separate species following the Handbook of the Birds of the World and other authorities<p>It has been suggested that Heard shags may visit the Kerguelens and that Kerguelen shags with white wing or back patches are the result of hybridization.
- 学名
- Leucocarbo verrucosus
- 命名信息
- (Cabanis, 1875)
- 目
- Suliformes
- 科
- Phalacrocoracidae
- 属
- Leucocarbo
分布与栖息地
This species nests on the coast of Grande Terre (the main island of the archipelago), on offshore islands, and on islands in the Golfe du Morbihan. It forages at sea throughout the archipelago, usually within 6 km (3.7 mi) of shore and especially in bays and inlets, though immatures have been seen rarely as far as 80 km (50 mi). Reports from Heard Island and western Australia may be of ship-assisted birds.<p>In the austral summer it feeds among kelp, sometimes at the bottom.
- 迁徙
- Complete migrants
保护状况
- 种群趋势
- unknown
照片
分布
其他鸟类
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Lalage conjuncta
A rather long-tailed and long-winged bird with a short stubby head, similar in proportions to a small cuckooshrike. Plumage distinctively clean-cut in black and white, with mostly black upperside and white underside, broad white wing panels, and a white rump barred black. Belly often tinged with chestnut. Appears dependent on primary undisturbed forest. Often quiet, but voice reportedly includes a nasal “tchow-tchow-de-weet.”
Blue Bird-of-Paradise
Paradisornis rudolphi
A large bird of mid-montane forests in eastern New Guinea. Black head and back, bright blue wings and tail, white bill and split eye-ring. Male also has reddish and blue plumes and 2 long, black tail streamers. Male has a remarkable display, hanging upside down from a low perch. Female, brownish below, with slight barring. Both sexes are unmistakable. Male gives a far carrying, upslurred “where?!” repeated at intervals from a high perch.
Yellow-crowned Redstart
Myioborus flavivertex
Distinctive warbler endemic to Colombia’s Santa Marta Mountains. It has a mostly black head, yellow crown and underparts, and a buffy stripe between the eye and bill. White outer tail feathers are often flared out conspicuously while it is feeding. Inhabits middle to upper levels of cloud forest, and often joins mixed species flocks. Song is a long, chaotic series of squeaks that gradually gets louder; also gives a rapid series of tic notes. Often seen along the road in the higher parts of El Dorado Nature Reserve.
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