Scripps's Murrelet
Synthliboramphus scrippsi
Small seabird, black above and white below. Breeds on rocky islands; otherwise found in warm offshore waters. Often seen in pairs on the water; frequently dives in search of fish. Short, thin bill. Very similar to Craveri's Murrelet; best separated by white, not gray, underwings. Once considered the same species as the similar Mexican cousin, the Guadalupe Murrelet, but now split into separate species. Guadalupe Murrelet has more white on the face, especially in front of the eye.
识别特征
Scripps's murrelet (Synthliboramphus scrippsi) is a small seabird found in the California Current system in the Pacific Ocean. This auk breeds on islands off California and Mexico. It is threatened by predators introduced to its breeding colonies and by oil spills. This species and the Guadalupe murrelet were considered conspecific and were known collectively as Xantus's murrelet until 2012. The two species are now considered distinct based on a lack of evidence of interbreeding at a shared nesting colony on the San Benito Islands, differences in facial pattern and bill shape, and differences in vocalizations and genetics.
分类信息
Genus: Synthliboramphus; Family: Alcidae; Order: Charadriiformes.
- 学名
- Synthliboramphus scrippsi
- 命名信息
- (Green & Arnold, 1939)
- 目
- Charadriiformes
- 科
- Alcidae
- 属
- Synthliboramphus
分布与栖息地
Breeding range: NA, MA : ec North Pacific coast: Channel Is. (s California) and islands off nw, nc Baja California to San Benito (nw Mexico). Non-breeding range: n to coastal Washington (ec North Pacific Ocean).
- 繁殖区
- NA, MA : ec North Pacific coast: Channel Is. (s California) and islands off nw, nc Baja California to San Benito (nw Mexico)
- 非繁殖区
- n to coastal Washington (ec North Pacific Ocean)
- 迁徙
- Resident species
行为
Migration pattern: Resident species.
保护状况
Population trend: declining.
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
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Laniarius major
Robust black-and-white bushshrike. There is a pale cinnamon wash on the belly and a white stripe across the top of the wing. Found in dense microhabitats within forest, woodland, thickets, and gardens. Not particularly shy, but spends most of its time in dense cover, usually in pairs. Highly vocal bird with a variety of calls. The song is a synchronized duet of hollow hoots from the male and ratcheting calls from the female. Has a very similar color pattern to other boubous, but its underparts are paler than those of Southern Boubou and darker than those of Swamp Boubou. Has a white stripe on the wing, unlike Zanzibar Boubou.
Pheasant-tailed Jacana
Hydrophasianus chirurgus
An eye-catching waterbird found on lakes and ponds with extensive floating vegetation. Long-tailed breeding adults are striking: the large white wing patch and head contrast sharply with its black body and bright yellow neck patch. Short-tailed wintering adults and juveniles have a brown back, white underparts, and a toned-down version of the breeder's head pattern. Vocalizations include a variety of nasal clucking and purring calls; song, seldom heard, a repeated, ringing “ku-woo.”
Redwing
Turdus iliacus
Rather small, attractive thrush with bold whitish eyebrows, a variable orangey patch on each flank, and a yellow bill base. Shows rusty-orange underwings in flight. Breeds in wooded and forested habitats, especially with birch; in winter found mainly in open woodland, farmland with hedges, orchards, and parkland. Often in flocks, sometimes mixed with Fieldfares and other thrushes, feeding out in fields or in fruiting trees. Rich and lovely song is a series of burbling trills and whistles. Calls include a high buzzing “tseer” and short rattled phrases.
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