Japanese Night Heron
Gorsachius goisagi
A small brown heron with awkward-looking, hunched appearance. Occurs in dense, damp lowland and foothill forests next to bodies of water, where it hunts prey in dense cover. Paler crown and weaker crest than similar Malayan Night-Heron and lacks the white wingtips of that species. Shy and difficult to see; most readily observed during migration, when it sometimes visits more open habitats. Gives hooting calls at regular intervals, especially in early evening.
分类信息
- 学名
- Gorsachius goisagi
- 命名信息
- (Temminck, 1836)
- 目
- Pelecaniformes
- 科
- Ardeidae
- 属
- Gorsachius
分布与栖息地
The Japanese night heron typically inhabits dense, coniferous and broad-leaved forests on hills and low mountains in close proximity to bodies of water, i.e. rivers and streams. This habitat seems to be consistent between the breeding and non-breeding ranges. Generally, the altitudinal range of the Japanese night heron is between 50 and 240 meters. However, it has been reported at heights above 1,000 meters in Japan, where the habitat is scarce, and the Philippines. During the winter, the heron shelters in dark and deeply shaded forests, which are near water and can be as elevated as 2,400 meters.
- 繁殖区
- PAL : Honshu, Shikoku, Kyushu (c, s Japan), Jeju (off s Korean Pen.) and Taiwan
- 非繁殖区
- Ryukyu Is. (s Japan) to Philippines
- 迁徙
- Complete migrants
保护状况
The Japanese night heron is very rare, because of its restricted breeding area. The population of the heron has decreased down to a few thousand within the last decade. For this reason, the Japanese night heron is legally protected by Japanese and Hong Kong Laws, and many programs have been proposed to counteract/steady the decline and create a revitalization of the species. The conservation acts propose public awareness, further study of the heron's home range within the seasons of breeding and inactivity, and control the sale of specimens. The control and inhibition of invasive species that impact the heron are also being addressed.
- 种群趋势
- declining
照片
分布
其他鸟类
Rufous-capped Antshrike
Thamnophilus ruficapillus
Small antshrike found in the understory of dense forests and second growth. Has a rusty cap and back and is buff-brown on the face and underparts. Males are barred on the breast and undertail, which is absent on females. The song is a loud and descending series of 12–13 “tjew” notes, accelerating towards the end.
Chestnut-bellied Seed-Finch
Sporophila angolensis
Widespread but uncommon in lowlands of South America, mainly east of the Andes. Male is mostly black with a rich chestnut belly. Female is plain warm brown. Both sexes have very large dark bill. Typically found in pairs, not in flocks like seedeaters often are, but occasionally joins a mixed flock of other "weed-eating" birds. Occurs in shrubby or grassy areas at the edge of woods.
Broad-billed Prion
Pachyptila vittata
The largest of the six prion species, with an exceptionally wide bill that gives the head a chunky appearance. Occurs in dispersed flocks at sea, where it catches prey items either sitting on the water or skimming the surface for zooplankton. Can be seen around breeding colonies on the Chatham Islands, in southern New Zealand, and in the South Atlantic Ocean. The wide bill distinguishes this species from other prions apart from Salvin’s and MacGillivray's, which are smaller in overall size and have a narrower bill than the Broad-billed Prion. However this can be hard to see at sea, and identification of prions is often impossible without a good view or photograph.
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