塘鵝"Gannet"是海鳥，桑屬"Morus"，家庭"Sulidae"，跟鰹鳥相關密切.
塘鵝是大型黑色和白色黃頭鳥，長而尖的翅膀和尖喙,北方塘鵝是北大西洋的最大海鳥,翼展可達2米.其他兩個品種出現在非洲南部，澳大利亞南部和新西蘭的溫帶海洋.
The gannets are large black and white birds with yellow heads; long, pointed wings; and long bills. Northern gannets are the largest seabirds in the North Atlantic, with a wingspan of up to 2 metres. The other two species occur in the temperate seas around southern Africa, southern Australia and New Zealand.
塘鵝是群體,棲息島嶼上和海岸，正常生一個藍蛋.在幼鳥的第一年，是深褐色，在隨後幾年後，並逐漸變得更多的白色,直到成長是五年期.
Gannets are colonial breeders on islands and coasts, normally laying one chalky, blue egg.Young birds are dark brown in their first year, and gradually acquire more white in subsequent seasons until they reach maturity after five years.
未成熟的塘鵝 Immature Gannet
讓我們看看白色黃頭的北方塘鵝（學名：Morus bassanus），為"Gannet"科屬下的一個大種類，是北大西洋最大的海鳥.
The Northern Gannet (Morus bassanus) is a seabird and is the largest member of the gannet family, Sulidae. this bird is a spectacular high-speed diver.
成熟的北方塘鵝
日落的
非常平均的築巢
這些鳥可以高速潛水,可以在水面上方高度10-40米（33-130英尺），直接用自己的身體和翅膀捲起緊貼身體，像箭一樣衝刺入水,時速能達到超過100公里/小時（60英里每小時），可以直入水里3-5米（10-16英尺），如果潛水游泳可以到12-15米（40 -50英尺）.它們多數把魚吃了才出水面.
These birds are spectacular high-speed divers, plunging into the ocean from a height of 10–40 metres (33–130 ft), with their bodies straight and rigid, wings tucked close to the body but reaching back, extending beyond the tail, before piercing the water like an arrow. Their nearly vertical dive can reach speeds exceeding 100 km/h (60 mph) before entering the water, allowing them to penetrate 3–5 m (10–16 ft) below the surface, and occasionally swimming down to 12–15 m (40–50 ft). If the dive was successful, gannets will swallow the fish underwater before surfacing, and will never fly with the fish in its bill. Although they are strong and agile fliers, they are clumsy during takeoffs and landings.(Wiki)
發表於 2013-9-10 05:30 AM
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發表於 2013-9-10 02:22 PM
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