花鸟图鉴 › 鸟类

小嘴乌鸦

Carrion Crow|ハシボソガラス

Corvus corone · 鸦科 Corvidae

小嘴乌鸦
摄影:Alexis Lours,来自 Wikimedia Commons,以 CC BY 4.0 授权。照片未经修改(仅缩放)。
地区
日本与温带东亚
环境
城市与花园、森林
颜色
黑
体型
大型(50 厘米以上)
IUCN 等级
无危 (LC)

识别特征

体长 48 到 52 厘米,翼展 84 到 100 厘米,体重 400 到 600 克。通体黑色带绿或紫色光泽,嘴、腿和脚也是黑色;嘴比大嘴乌鸦细直、额头平缓。比渡鸦小得多,比秃鼻乌鸦光泽更不偏绿。幼鸟羽毛带褐、眼蓝色,随年龄变黑和褐。

栖息环境

农田、河滩、林缘、公园和城市,日本的城市里与大嘴乌鸦一起极为常见;在高树上筑巢,杂食,会把坚果丢到路上让车碾开。

分布

西欧和东古北界,东部亚种 orientalis 分布于中亚、西伯利亚、中国北部和东北、朝鲜半岛和日本;中间地带由冠小嘴乌鸦取代。日本全境常见,中国北方冬季多;新加坡无分布。

季节与习性

留鸟,全年可见。3 到 6 月繁殖;秋冬傍晚成大群飞往固定的夜宿地,日本城市的夜宿群可达数千只。

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。

全黑的鸟最考验曝光:阴天的柔光最容易拍出羽毛层次,顺光下光泽呈紫绿色,逆光只剩剪影。傍晚归巢的群飞用长焦压缩在天空和建筑之间。它们聪明而警觉,用车或长焦。

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

黑色与天空的图形;都市黄昏的群鸟。

相似物种

大嘴乌鸦(嘴粗厚、额头突出,叫声更浑厚,东亚城市更常见);秃鼻乌鸦(嘴基裸露灰白);渡鸦(大得多,尾楔形)。

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

Carrion Crow

小嘴乌鸦 · ハシボソガラス

Corvus corone · Corvidae

Carrion Crow
Photo: Alexis Lours, via Wikimedia Commons, licensed CC BY 4.0. Unmodified apart from resizing.
Region
Japan and temperate East Asia
Habitat
towns and gardens, forest
Colour
black
Size
large (over 50 cm)
IUCN status
Least Concern
IOC breeding range
PAL (n, sw, e)

Identification

48–52 cm long, wingspan 84–100 cm, 400–600 g. Black with a green or purple sheen, bill, legs and feet black too; the bill is slimmer and straighter than the large-billed crow's and the forehead flatter. Much smaller than a raven, and less green in its gloss than a rook. Juveniles are brownish with blue eyes, darkening with age.

Habitat

Farmland, river beds, forest edge, parks and cities; extremely common in Japanese cities alongside the large-billed crow. Nests high in trees, eats almost anything, and drops nuts on roads for cars to crack.

Distribution

Western Europe and the eastern Palearctic; the eastern subspecies orientalis ranges across Central Asia, Siberia, northern and north-eastern China, Korea and Japan, with the hooded crow between. Common throughout Japan and in northern China in winter; absent from Singapore.

Season and behaviour

Resident, seen all year. Breeds March to June; in autumn and winter large flocks fly at dusk to fixed roosts, in Japanese cities sometimes thousands strong.

Photography tips

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

An all-black bird is the hardest exposure: soft overcast light shows feather detail best, front light brings out the purple-green gloss, and backlight leaves a silhouette. Compress the evening roost flights between sky and buildings with a long lens. They are clever and wary: use a car or a long lens.

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

Graphic black against sky; city crows at dusk.

Similar species

Large-billed crow (deep heavy bill, bulging forehead, deeper voice, the commoner city crow in East Asia); rook (bare grey-white bill base); raven (much larger, wedge tail).

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