Pale-eyed Blackbird
Agelasticus xanthophthalmus
Medium-sized blackbird found locally in habitats with wet grass. Shiny black, with a white or light yellow eye and sharply pointed black bill. Giant Cowbird occasionally has a pale eye and may appear similar, but is much larger than Pale-eyed Blackbird; told apart from the similar Velvet-fronted Grackle by its pale eyes, longer, more pointed bill, and shorter tail. Found in wet grasslands and grassy margins of oxbow lakes, where it forages singly, in pairs, or in small groups.
识别特征
The adult pale-eyed blackbird is entirely black in both sexes. It has white or pale buff coloured irises to its eyes which are very distinctive and distinguish it from other black birds found in the area such as the velvet-fronted grackle and the shiny cowbird which have dark eyes. Juveniles and immature birds are brownish-black with underparts streaked with yellow or buff.<p>The call is a loud metallic "tew-tew-tew-tew" similar to that of a black-capped donacobius. It is usually sung from the top of a shrub.
分类信息
- 学名
- Agelasticus xanthophthalmus
- 命名信息
- (Short, 1969)
- 目
- Passeriformes
- 科
- Icteridae
- 属
- Agelasticus
分布与栖息地
The pale-eyed blackbird is found in a restricted area of eastern Peru and Ecuador. Its habitat is marshy areas round lagoons and oxbow lakes and the fringes of nearby grassland. Since its first discovery in 1969 it has been seen regularly in the Limoncocha National Biological Reserve near the Napo River, Ecuador and in the Tambopata National Reserve near the Madre de Dios River, Peru.
- 迁徙
- Resident species
行为
This blackbird is usually seen in pairs and spends most of the day in marshy places in thick undergrowth. It is most visible in the early morning when it emerges into more open areas to forage, and it at this time of day that it is most likely to be heard singing from the top of a bush.
保护状况
- 种群趋势
- stable
照片
分布
鸟叫声
其他鸟类
Sombre Nightjar
Caprimulgus fraenatus
A medium-sized typical nightjar with a golden-buff collar. Both sexes have small pale marks in the outer wings and at the corners of the tail. These are larger and whiter on males, and smaller and more buffy in females. Generally local and uncommon in savanna and grassland habitats, often in rocky areas. Similar to Nubian Nightjar, but darker overall, with less rufous in the wings. Also similar to many other nightjars, and best identified by voice. Call is a high-pitched, mechanical trill, similar to that of Plain Nightjar, but slightly lower-pitched.
Dark-sided Flycatcher
Muscicapa sibirica
Small brown flycatcher with dark smudging on the breast and sides that lend it a “vested” appearance. Tends to prefer higher-elevation forests for breeding than Asian Brown and Gray-streaked Flycatchers but uses a variety of open forests and gardens on migration and in winter. The generally darker appearance of this species when compared to Asian Brown makes the eyering more striking.
Greater Sand-Plover
Anarhynchus leschenaultii
Medium-sized plover with a long hefty bill. Breeding adults have a dark mask and orangish chest, neck, and forehead; females duller than males. Non-breeding birds and immatures are sandy brown above and white below, with a white throat and “eyebrows.” Often confused with Lesser Sand-Plover, and best distinguished when both present; look for larger size, heavier and longer bill, paler legs, and larger-headed appearance. Additionally, unlike some Lesser Sand-Plovers, Greater never has a black boundary around the throat. Breeds in high-elevation areas, where it favors arid, open habitats, sometimes near water. Winters on coastal mudflats and estuaries.
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