Javan Heleia
Heleia javanica
Small warbler-like bird with a gray head, yellowish-green body, and varying amounts of white around the eye; lacks the well-defined white “spectacles” of typical white-eyes. Birds in the montane regions of far western and far eastern Java have a dark patch between the eye and the base of the bill, and minimal white on the face (a full thin eyering in eastern birds, and a white crescent under the eye in western birds), while birds in central Java have a large but poorly-defined white patch around the eye. Forages actively in wooded and forested areas from foothills to mountaintops, often in pairs or groups. Joins mixed-species flocks. Song is a bright series of whistled notes; calls include rattling, high-pitched “tchrr”s and sharply falling whistles.
分类信息
- 学名
- Heleia javanica
- 命名信息
- (Horsfield, 1821)
- 目
- Passeriformes
- 科
- Zosteropidae
- 属
- Heleia
分布与栖息地
- 迁徙
- Resident species
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Nuttall's Woodpecker
Dryobates nuttallii
Small woodpecker almost entirely restricted to the state of California (barely entering northern Baja). Look for black-and-white barring on the back and patterned flanks. Males have a red cap, often raised and fluffy-looking. Occurs in oak woodlands and riparian areas, sometimes visiting bird feeders. Most similar to Ladder-backed Woodpecker, but range barely overlaps. Also compare with Downy Woodpecker, which has clean flanks and lacks bars on the back.
White-backed Duck
Thalassornis leuconotus
A smallish, tawny, bulbous-headed duck that sits low in the water, its tail often flush with the surface, giving it a distinctive appearance. When seen well, the white patch at the base of the bill is diagnostic. The namesake white back is usually visible only in flight. Partially nomadic; small groups are found on pans and pools that have emergent aquatic vegetation, especially waterlilies. Mostly quiet; rarely gives a squeaky-toy-like “swit-swit” whistle.
Bay-breasted Cuckoo
Coccyzus rufigularis
A large cuckoo with an impressive tail and a rich maroon throat and breast. Found in low-to-moderate elevation deciduous woodlands. The similarly shaped Hispaniolan Lizard-Cuckoo is smaller, has a longer and straighter bill, and is gray on the chest. The most common vocalization is a “ooo-whaaa,” given in a series. The impressive “dawn song” is a series of harsh, ratcheting utterances that accelerate in frequency and grow ever briefer in duration: the first few notes are “ooo-whaaaa,” becoming “whaa” as the song progresses.
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