Blyth's Swift
Apus leuconyx
A large swift with long pointed wings and a long, deeply forked tail. It has black upperparts, tail, and wings, with a prominent white rump. Feathers of underparts broadly fringed with dirty white, and throat is whitish. Often difficult or nearly impossible to separate in the field from other similar “fork-tailed swifts,” but the white rump band is slightly thinner than that of Pacific Swift, while Salim Ali’s Swift has a slightly differently shaped white throat patch. This species is less blackish than Cook’s Swift, with a slightly wider rump band. Mostly sticks to hills while breeding, but disperses widely post-breeding and large flocks or loose individuals can be seen almost anywhere.
分类信息
- 学名
- Apus leuconyx
- 命名信息
- (Blyth, 1845)
- 目
- Apodiformes
- 科
- Apodidae
- 属
- Apus
分布与栖息地
- 繁殖区
- PAL, OR : mid to high altitudes in Pakistan, Nepal, Bhutan and ne India
- 非繁殖区
- some winter at lower altitudes in Nepal and peninsular India
照片
其他鸟类
McKay's Bunting
Plectrophenax hyperboreus
Rare white snowball shrouded in mystery. Nonbreeding birds have buffy fringes to head and back feathers that wear to white by spring. Breeding males almost pure white except for limited black in wings. Breeding females have dark streaking on back. Breeds almost exclusively on St. Matthew Island in the Bering Sea; winters on the coast of western Alaska. Very similar to Snow Bunting but paler, usually with white rump; intermediate birds may be hybrids.
Reed Cormorant
Microcarbo africanus
A small, speckle-backed cormorant that is common and widespread in fresh water. The adult is blackish with a short black crest above the bill. Immatures are brownish with paler underparts. Although they share the same habitat with Great Cormorant, Long-tailed Cormorants can be separated by their much smaller size, red eyes, and proportionately longer tails. Generally, Long-tailed Cormorant avoids the marine habitats of the similar-looking Crowned Cormorant, which has a larger crest, an unspeckled back, and a shorter tail.
Costa Rican Pygmy-Owl
Glaucidium costaricanum
Small owl, active during the day and night. Very similar in plumage to other pygmy-owls, but limited range at high elevation (mostly above 1000m) is a good starting point. Overall brown to rufous with white stripes on belly; look for small white spots on crown and bars on flanks. Sexes alike. Found singly or in pairs in montane forests. Listen for whistled song of doubled notes given on an even pitch.
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