花鸟图鉴 › 鸟类

夜鹭

Black-crowned Night Heron|ゴイサギ

Nycticorax nycticorax · 鹭科 Ardeidae

夜鹭
摄影:Jac. Janssen,来自 Wikimedia Commons,以 CC BY 2.0 授权。照片未经修改(仅缩放)。
地区
新加坡与热带亚洲、日本与温带东亚
环境
河湖湿地、海岸与红树林
颜色
黑、灰、白
体型
中型(20 到 50 厘米)
IUCN 等级
无危 (LC)

识别特征

中型鹭,比白鹭和其他「昼行」鹭矮壮,嘴、腿和颈都短。成鸟头顶和背黑色,翅淡灰,下体白色或灰白,眼红,腿短而黄;脑后有一到几根细长的白色饰羽。休息时缩着脖子驼背站立,觅食时才伸长颈部。幼鸟褐色,布满白色斑点,眼橙黄。

栖息环境

淡水和咸水湿地、河流、池塘、红树林和城市公园的水边;白天成群在茂密的树上休息,黄昏后出来觅食。

分布

分布于世界大部分地区,包括非洲、亚洲、欧洲、北美和南美;澳大拉西亚由近缘的棕夜鹭取代。中国、日本和新加坡都常见,城市公园的池塘边常有白天的集群栖息地。

季节与习性

全年可见,北方种群冬季南迁。主要在黄昏和夜间活动,白天能在树冠里找到一动不动的集群。繁殖期短暂地腿变成鲑粉色、眼周变蓝。

拍摄建议

以下为 FilmAnalysis 编辑的拍摄经验,不是资料来源中的内容。

白天找到它们休息的树,从下往上拍驼背的剪影;黄昏它们飞出去觅食时,用高感光度和 1/500 秒抓逆光的飞行。幼鸟的斑点比成鸟上镜,别忽略。靠近集群时慢慢来,一只飞走全群都会走。

拍鸟守则:与鸟保持它不改变行为的距离;不靠近、不公开巢和繁殖地点;不用食物、录音回放或闪光灯引诱;不修剪巢周围的枝叶;在保护区遵守观察区和步道的规定。

适合的摄影风格

黄昏低光的剪影;黑白灰的极简。

相似物种

棕夜鹭(背栗红色,澳大拉西亚);幼鸟与栗头鳽、黄斑苇鳽的幼鸟相似,但体形更大更壮。

相关徽章

暂无。本种还没有经过验证的照片识别,所以没有对应的徽章:图鉴里有名字不等于照片里有证据。

本页插图为 FilmAnalysis 原创绘制。照片来自维基共享资源,授权和作者见图下说明。

收录缘由:本种来自 《观鸟笔记》物种清单(名称经 IOC 15.2 核对)。名称以IOC 世界鸟类名录 15.2为准,事实依据下列资料来源,照片识别暂不提供。

资料来源

Flora & Birds › Birds

Black-crowned Night Heron

夜鹭 · ゴイサギ

Nycticorax nycticorax · Ardeidae

Black-crowned Night Heron
Photo: Jac. Janssen, via Wikimedia Commons, licensed CC BY 2.0. Unmodified apart from resizing.
Region
Singapore and tropical Asia, Japan and temperate East Asia
Habitat
rivers and wetlands, coast and mangroves
Colour
black, grey, white
Size
medium (20 to 50 cm)
IUCN status
Least Concern
IOC breeding range
Worldwide (except AU)

Identification

A medium-sized heron, stockier than the egrets and day herons, with a short bill, legs and neck. Adults have a black crown and back, pale grey wings, white or grey-white underparts, red eyes and short yellow legs, with one to a few long slender white plumes from the back of the head. It stands hunched with the neck drawn in and stretches it only to hunt. Juveniles are brown, heavily spotted white, with orange-yellow eyes.

Habitat

Fresh and salt wetlands, rivers, ponds, mangroves and the water's edge in city parks; roosts by day in dense trees and comes out to feed after dusk.

Distribution

Found over much of the world, in Africa, Asia, Europe and the Americas; replaced in Australasia by the closely related Nankeen night heron. Common in China, Japan and Singapore, where park ponds often hold daytime roosts.

Season and behaviour

Seen all year; northern birds move south in winter. Mainly active at dusk and at night; by day the roosting groups sit motionless in the canopy. For a short time in courtship the legs turn salmon-pink and the skin around the eye blue.

Photography tips

These are the FilmAnalysis editors' notes, not content from the sources.

Find the roost tree by day and shoot the hunched silhouettes from below; at dusk, as they fly out to feed, use high ISO and 1/500 s against the backlight. The spotted juveniles photograph better than the adults, so do not pass them by. Approach a roost slowly: when one leaves, they all do.

Field ethics: keep a distance at which the bird does not change its behaviour; never approach or publish nest sites; no baiting, playback or flash; never clear vegetation around a nest; follow reserve rules and stay on paths.

Photographic styles

Low-light dusk silhouettes; black, white and grey minimalism.

Similar species

Nankeen night heron (chestnut back, Australasia); juveniles resemble young bitterns but are larger and heavier.

Related badge

None yet. No validated photo recognition exists for this species, so no badge is tied to it: a name in the encyclopedia is not evidence in a photograph.

The illustration is original FilmAnalysis artwork. The photograph is from Wikimedia Commons; its licence and author are under it.

Why it is listed: this species comes from the Birdwatching Notebook species list (names checked against IOC 15.2). Names follow the IOC World Bird List 15.2; the facts follow the sources below; photo recognition is not offered.

Sources