Marañon Gnatcatcher
Polioptila maior
Tiny gray-and-white bird with long cocked tail and rather long slender bill. Fairly common in dry and semi-dry forest in the Marañón Valley; recently also discovered in dry valleys as far south as northern Lima. Often in pairs, traveling with mixed-species flocks. Male has a solid black cap, female has a bold white eyebrow. Generally the only gnatcatcher in range, but compared to White-browed Gnatcatcher, note the white forehead in female Marañon, and lack of white eyebrow in the male.
分类信息
- 学名
- Polioptila maior
- 目
- Passeriformes
- 科
- Polioptilidae
- 属
- Polioptila
照片
分布
鸟叫声
其他鸟类

Jackson's Widowbird
Euplectes jacksoni
A medium-sized dark widowbird. Breeding males are unmistakable, with a long downcurved tail and rufous shoulders. Non-breeding males lose their long tail and become streaky and brown, but keep the shoulder pattern. Females are brown and streaky year-round. Breeds in montane grassland, but sometimes found in cultivation and other open habitats. Otherwise usually in flocks, especially when not breeding. Males give an odd display in which they jump straight into the air. Females could be confused with many other species, but even during the non-breeding season are usually associated with males, which can be identified by their shoulder pattern. Non-breeding males could be confused with non-breeding male Fan-tailed Widowbird, but have a more restricted and less orange shoulder patch. The main vocalization is a dry “zrit.”

Ivory Gull
Pagophila eburnea
A spectacular and highly sought-after Arctic gull. Unmistakable in all plumages. Adults are entirely gleaming white with black legs and a bluish-green bill with an orange tip. Immatures have a dark face and variable black spotting on the wings and tail. Stocky and short-legged, suggesting an odd white pigeon as much as a typical gull. Almost always restricted to icy areas in the High Arctic, very rarely wandering further south in the winter. Can be seen singly or in loose groups, especially when feeding at a seal carcass. Typically very confiding.

Black-hooded Thrush
Turdus olivater
Medium-sized thrush of montane forests. Looks large and bulky compared to other thrushes in range; note male’s distinctive black head contrasting with brownish-olive body and yellow bill and legs. Female is similarly patterned but much duller. Found in highland forest and second growth, generally above 800 meters, where it is often the most common thrush. Most reliably seen at fruiting trees, where many individuals may congregate; also often seen at middle levels of forest, where it may take conspicuous perches to assess an observer before flying off. Song is a halting series of phrases, many of them doublets, generally alternating between rich, low notes and high reedy ones; call note is a rich, liquid bark. Male is unlikely to be confused with other species; female could be confused with female Pale-eyed Thrush but is larger, has darker eyes with distinct eyering and a semblance of male’s hooded look.
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