Eastern Olivaceous Warbler
Iduna pallida
Small, pallid olive-gray warbler. Very similar to other Iduna and Acrocephalus species. Note its long and slender bill and faint pale wing panel (most prominent when plumage is fresh, sometimes not noticeable). Pumps its long tail continuously as it flits around in bushes and trees after small insects, a behavior which separates it from very similar Acrocephalus warblers. Found in open woodlands, riparian forest, as well as dry and semi-arid zones; strong connection with Tamarix bushes. Call is a dry and harsh “chack.” Song is a repeating scratchy sequence.
识别特征
It is a medium-sized warbler, more like a very pale reed warbler than its relative the melodious warbler. The adult has a plain pale brown back and whitish underparts. The bill is strong and pointed and the legs grey. The sexes are identical, as with most warblers, but young birds are more buff on the belly. It has a characteristic downward tail flick.<p>The western olivaceous warbler differs from this species in being larger and having a browner tinge to the upperparts; it also has a larger bill. The eastern olivaceous warbler sometimes has a greenish tinge to its upperparts, and can be very difficult to separate from Sykes's warbler, Iduna rama. The song is a fast nasal babbling.
分类信息
The eastern olivaceous warbler (Iduna pallida) is a "warbler", formerly placed in the Old World warblers when these were a paraphyletic wastebin taxon. It is now considered a member of the acrocephaline warblers, Acrocephalidae, in the tree warbler genus Iduna. It was formerly regarded as part of a wider "olivaceous warbler" species, but as a result of modern taxonomic developments, this species is now usually considered distinct from the western olivaceous warbler, Iduna opaca.
- 学名
- Iduna pallida
- 命名信息
- (Hemprich & Ehrenberg, 1833)
- 目
- Passeriformes
- 科
- Acrocephalidae
- 属
- Iduna
分布与栖息地
It is migratory, wintering in sub-Saharan Africa or Arabia. It is a rare vagrant to northern Europe.
- 繁殖区
- PAL, AF : sc PAL, n AF
- 非繁殖区
- Sub-Saharan Africa
- 迁徙
- Complete migrants
保护状况
- 种群趋势
- stable
照片
分布
鸟叫声
其他鸟类
Yucatan Jay
Cyanocorax yucatanicus
Common and conspicuous in woodland and forest edge of Yucatan Peninsula, where there are no similar species. Usually found in groups of 5-25 birds, often chattering noisily. Black and bright blue plumage is distinctive. The bill is black on adult birds, yellow on juveniles and 1st-year birds. The striking white bodied juvenile plumage is held for only a few weeks in late summer before being replaced by adult-like black feathering.
Purple-crested Turaco
Gallirex porphyreolophus
A bulky, iridescent bird clad in deep purple, blue, green, and olive washed with pink. It clambers acrobatically through riverine woodland and savanna thickets. In flight it explodes from the canopy with distinctive deep red panels in the wings. It produces a distinctive croaking “khoh-khoh-khoh-khoh….” that gets progressively louder before suddenly stopping. The similar Ross’s Turaco differs from Purple-crested Turaco by being darker overall and having a red crest and yellow face.
Red-throated Sunbird
Anthreptes rhodolaemus
Medium-sized sunbird with a fairly straight dark bill. Brightly-colored has an iridescent green back, yellowish belly, and reddish wings, face, and throat. Female is dull brownish yellow overall, with an olive-tinged back and wings. Brown-throated Sunbird is very similar in all plumages; male of that species has more prevalent bluish iridescence and minimal reddish coloration, while female Brown-throated has a slightly narrower eyering (best identified when accompanied by a male though). Where the two overlap, Red-throated tends to be much less common, especially in artificial habitats such as parks and gardens, though it does occur in secondary growth and forest edge, as well as primary growth. Song is a brief series of high thin “tsi-tzee” notes, and calls include various high chips and trills.
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