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
Laughing Falcon
Herpetotheres cachinnans
Spectacular and distinctive raptor of tropical lowlands, often seen perched on prominent bare snags, from which it hunts for snakes. Occurs in forest and also in open country with scattered trees. Note the creamy head and underparts with a broad black "bandit mask." Does not soar, and flies with hurried, stiff wingbeats, when rusty patches show on the wings. Named for its far-carrying laughing calls.
Sulawesi Crow
Corvus celebensis
Medium-sized black crow with a relatively long, slightly decurved bill. Plumage has an iridescent dark blue sheen when seen up close. Due to absence of generally more adaptable Large-billed Crow on Sulawesi, this species can be found in both intact lowland forest as well as somewhat more degraded and fragmented habitats. Often encountered as pairs or small flocks in rowing flight over roads, rivers, and clearings. Gives loud nasal caws, often with a rather dry quality. Formerly treated as part of a more generic “Slender-billed Crow” that ranged from the Philippines to Sulawesi.
Yellow-rumped Warbler
Setophaga coronata
One of the most common and widespread warblers; often the core member of mixed warbler flocks during migration, especially early in spring and late in fall. Two main populations: “Audubon’s” breeds mainly in the mountains of the western U.S. and into British Columbia; “Myrtle” breeds from the eastern U.S. across Canada to Alaska. All plumages show a bright yellow rump and yellow on the sides. Most “Audubon’s” have a yellow throat, but dull immature females can be off-white. “Myrtle” Warblers have a white throat that wraps around below the cheek. Both subspecies breed in coniferous or mixed forests, often near clearings or edges. In migration and winter, found in any woodland or open shrubby area, including coastal dunes, fields, parks, and residential areas. Often sallies out from a conspicuous perch to snatch insects. Also eats berries in the winter. Calls frequently: a flat “check” (Myrtle) or rising “chit” (Audubon’s). Another distinctive sedentary population, surely a separate species, occurs very locally in the highlands of Guatemala: Goldman’s Warbler. Males are strikingly black overall, and show a mostly yellow throat with white corners.
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