Kittlitz's Murrelet
Brachyramphus brevirostris
Small, oblong-shaped seabird. Breeding plumage mottled brown; darkness varies, but often shows golden tint. Nonbreeding plumage dark gray above and white below, with a white face and large white wing patch. Nests in crevices in rocky scree slopes, particularly around glaciers; forages in coastal glacial outflows. Similar to Marbled and Long-billed Murrelets, but with shorter bill and white outer tail feathers; breeding birds average paler with speckled back, while nonbreeders show white on face extending above the eye.
分类信息
- 学名
- Brachyramphus brevirostris
- 命名信息
- (Vigors, 1829)
- 目
- Charadriiformes
- 科
- Alcidae
- 属
- Brachyramphus
分布与栖息地
- 繁殖区
- PAL, NA : Arctic to subarctic nw to ne North Pacific coasts: patchily from Wrangel I. (n of ne Siberia), Chukotka, ne Kamchatka, n Sea of Okhotsk (e Russia); Bering Sea and Aleutian Is., Gulf of Alaska to se Alaska; nests up to 75 km inland
- 非繁殖区
- to bays and fjords within breeding range
- 迁徙
- Resident species
行为
The Kittlitz's murrelet feeds close to the shore, in particular in the waters around tidewater glaciers. It feeds on larval fish, krill and other small zooplankton. Chicks are fed with slightly larger fish carried in the bill.<p>The Kittlitz's murrelet is one of the least known auks, although it is known not to be colonial, nesting instead above the tree line on mountains inland from the sea. The nests are situated on south facing slopes on bare ground, often close to snow. A single egg is laid (and incubated for an unknown amount of time). Chicks are fed throughout the day, and reach fledging weight in around 25 days. The exposed nature of the nesting grounds mean that chicks keep their downy feathers later than most other birds, losing the down 12 hours before they fledge. It is assumed that they fly to sea on fledging, but it has also been suggested that they reach the seas through rivers. After the chick fledges it is thought to receive no further parental care, no chick has ever been seen with an adult at sea.
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Crescent-chested Puffbird
Malacoptila striata
Cryptically plumaged puffbird. Brown overall with cinnamon streaks down the head, back, and wings. Note the distinctive black-and-white breast band. Usually sites motionless in the understorey and middle levels of humid forests and second growth.
West Indian Woodpecker
Melanerpes superciliaris
A medium-sized woodpecker of drier forests including palm groves. Its strongly barred back eliminates all other species in it range except for Northern and Fernandina’s Flickers, but both flickers lack the West Indian Woodpecker’s extensively red nape and hind-crown. The barring on the back of the Northern Flicker is also far less pronounced than it is on West Indian Woodpecker. Common vocalizations include a staccato “pee-uh-uh-uh-uh…” with accent on first note, and emphatic bursts of “bluhhh, bluhhh, bluhhh,” with notes that are both harsh and slightly trilled.
Carola's Parotia
Parotia carolae
A fairly large, short-tailed bird of mid-montane forest canopy. Male is mainly black with white flanks, golden throat, bronzy-scaled chest, white stripe down the forehead and 6 antennalike feathers projecting from the back of the head. Note the yellow eye. Female is gray-brown above and strongly-barred below with a heavy white stripe above the eye. Male dances at a terrestrial court, where it gives one of the most elaborate displays in the bird world. Co-occurs with Lawes’s Parotia but Carola’s male has white flanks and female lacks a black head. One of many different vocalizations is a loud, quavering shriek.
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