Willow Warbler
Phylloscopus trochilus
Looks very much like a chiffchaff, and best identified by voice: song is pleasant, slightly descending warble, very different from song of chiffchaff. Compared to chiffchaff, Willow Warbler is often brighter, more yellowish (especially in autumn) with stronger pale eyebrow, pinkish legs, and tends not to habitually dip its tail. However, many birds seen are best left unidentified. Found in wooded habitats, from mixed forest to willow thickets in open country.
识别特征
The willow warbler is a typical leaf warbler in appearance, 11–12.5 cm (4.3–4.9 in) long and 7–15 g (0.25–0.53 oz) weight. It is greenish brown above and off-white to yellowish below; the wings are plain greenish-brown with no wingbars. Juveniles are yellower below than adults. It is very similar to the chiffchaff, but non-singing birds can be distinguished from that species by their paler pinkish-yellow legs (dark brown to blackish in chiffchaff), longer paler bill, more elegant shape and longer primary projection (wingtip). Its song is a simple repetitive descending whistle, while the contact call is a disyllabic 'hoo-eet', distinct from the more monosyllabic 'hweet' of chiffchaffs.
分类信息
The willow warbler was formally described by the Swedish naturalist Carl Linnaeus in 1758 in the tenth edition of his Systema Naturae under the binomial name Motacilla trochilus. The willow warbler is now one of around 80 species placed in the genus Phylloscopus that was introduced by the German zoologist Friedrich Boie in 1826. The genus name combines the Ancient Greek phullon meaning "leaf" and skopos meaning "seeker" (from skopeo, "to watch"). The specific epithet is Ancient Greek meaning "wren".<p>Before the English name was standardised to willow warbler by William Yarrell in 1843, it was merged with the chiffchaff and wood warbler as the "willow wren".<p>Three subspecies are recognised. There is a clinal reduction in green and yellow plumage tones from west to east, with central birds browner and easternmost birds predominantly greyish:
- 学名
- Phylloscopus trochilus
- 命名信息
- (Linnaeus, 1758)
- 目
- Passeriformes
- 科
- Phylloscopidae
- 属
- Phylloscopus
分布与栖息地
Breeding range: PAL : widespread. Non-breeding range: AF.
- 繁殖区
- PAL : widespread
- 非繁殖区
- AF
- 迁徙
- Complete migrants
行为
Migration pattern: Complete migrants.
保护状况
Population trend: declining.
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
African Paradise-Flycatcher
Terpsiphone viridis
This remarkable flycatcher occurs in both rufous and white morphs, but it always has grayish underparts and a strong crest. The breeding male has ludicrous central tail feathers, twenty centimeters long, that trail like the ribbon of a rhythmic gymnast, while the female lacks the tail streamers and has a smaller crest. Singles and pairs occasionally join flocks in open woodland, riverine forest, and thickets, avoiding lowland evergreen forest. Very vocal, often giving a repeated grating “dzee-zwee” call and a sweet melodic “willie-willie-willie-wee-wooo” song. The very similar Rufous-vented Paradise-Flycatcher differs from African Paradise-Flycatcher by having a rufous undertail and a shorter crest.
Streak-breasted Treehunter
Thripadectes rufobrunneus
This warm brown forest dweller is similar to many other foliage-gleaners and treehunters. Look for the relatively bright orangey throat with streaking on the breast. The bill is all dark. Also note the plain head without an eyebrow. Found in montane forests from 900 to 2500m, where it moves at low to middle heights. Seen singly or in pairs, often with a mixed-species flock. Song is a harsh series of paired notes.
Pfrimer's Parakeet
Pyrrhura pfrimeri
Long-tailed parakeet. Note the maroon face bordered by a bluish crown and cheeks and the scaly blue breast. An inhabitant of deciduous forests on rocky outcrops, where it is encountered in small flocks at fruiting trees, occasionally descending to the ground. Calls similar to other members of the White-eared Parakeet group.
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