花鸟图鉴 › 鸟类

北鲣鸟

Northern Gannet|シロカツオドリ

Morus bassanus · 鲣鸟科 Sulidae

北鲣鸟
摄影:Odd Wellies,来自 Wikimedia Commons,以 CC BY 2.0 授权。照片未经修改(仅缩放)。
地区
其他地区(东亚仅见于鸟园或植物园)
环境
海岸与红树林
颜色
白、黄、黑
体型
大型(50 厘米以上)
IUCN 等级
无危 (LC)

识别特征

鲣鸟科最大的种,北大西洋最大的海鸟:体长 87 到 100 厘米,翼展 170 到 180 厘米,体重 2.3 到 3.6 公斤。身体白色流线形,颈长,翅长而窄,翼尖深褐到黑色;头和颈带淡黄色,繁殖期更明显,雄鸟更深。眼周裸皮黑色,眼圈钴蓝,虹膜淡蓝灰。雌雄相似。幼鸟深褐带白点,五年才变全白。

栖息环境

北大西洋的海岛和海崖,密集成群营巢;在海上从数十米高空收翅俯冲入水捕鱼,是最壮观的捕食方式之一。

分布

繁殖于西欧和北美东北部:冰岛、法罗群岛、不列颠群岛(巴斯岩是最大的繁殖群之一)、法国西北部、挪威北部和圣劳伦斯湾;越冬南到西非和西地中海。东亚无分布,太平洋没有鲣鸟属的近缘种;《观鸟笔记》将它列为异域鸟。

季节与习性

北大西洋繁殖地 4 到 9 月,群体的俯冲捕鱼在渔场附近全年可见。

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。

俯冲入水是它的招牌:从船上用 1/3200 秒和连续对焦,提前对准它收翅的瞬间,入水的水柱是第二张。白色身体在海面前减半档。繁殖崖上密密麻麻的群体从船上用长焦拍图案,淡黄的头在柔光下最准。

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

俯冲入水的瞬间;海崖上白色的密集图案。

相似物种

澳洲鲣鸟、南非鲣鸟(南半球近缘种,分布不重叠);大型的鸥翅膀形状和飞行方式不同。

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

Northern Gannet

北鲣鸟 · シロカツオドリ

Morus bassanus · Sulidae

Northern Gannet
Photo: Odd Wellies, via Wikimedia Commons, licensed CC BY 2.0. Unmodified apart from resizing.
Region
Elsewhere (in East Asia only in bird parks or botanic gardens)
Habitat
coast and mangroves
Colour
white, yellow, black
Size
large (over 50 cm)
IUCN status
Least Concern
IOC breeding range
AO (islands off subarctic, n temperate coasts of North Atlantic Ocean: Iceland, Faroe Is., British Isles, nw France and n Norway (e North Atlantic); Gulf of St. Lawrence and Atlantic coast of Newfoundland (se Canada, w North Atlantic))
IOC non-breeding range
to coastal e North Atlantic off sw Europe, w Mediterranean, Macaronesia s through Canary Is. (w of nw Africa) and nw Africa; to coastal w North Atlantic to Florida and n Gulf of Mexico

Identification

The largest gannet and the largest seabird of the North Atlantic: 87–100 cm long, wingspan 170–180 cm, 2.3–3.6 kg. A streamlined white body with a long neck and long slender wings tipped dark brown to black; the head and neck tinged buff-yellow, more so when breeding and deeper in males. Bare black skin round the eye, a cobalt-blue orbital ring and a light blue-grey iris. Sexes alike. Juveniles are dark brown with white specks and take five years to turn white.

Habitat

North Atlantic islands and sea cliffs, nesting in dense colonies; at sea it folds its wings and plunges from tens of metres for fish, one of the most spectacular feeding methods of any bird.

Distribution

Breeds in Western Europe and north-eastern North America: Iceland, the Faroes, the British Isles (Bass Rock is among the largest colonies), north-west France, northern Norway and the Gulf of St Lawrence; winters south to West Africa and the western Mediterranean. Absent from East Asia, and the Pacific has no gannet; Birdwatching Notebook lists it as an exotic.

Season and behaviour

At North Atlantic colonies from April to September; plunge-diving flocks can be seen near fishing grounds all year.

Photography tips

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

The plunge is its signature: from a boat at 1/3200 s with continuous focus, aiming ahead of the moment the wings fold, with the column of spray as the second frame. Half a stop under for a white body over the sea. The packed colony on the cliff makes patterns with a long lens from a boat, and the buff head is truest in soft light.

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

The instant of a plunge; dense white patterns on a sea cliff.

Similar species

Australasian and Cape gannets (southern relatives, no overlap); large gulls have a different wing shape and flight.

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