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冠海雀 Japanese Murrelet (カンムリウミスズメ)-亞成 | by Hiyashi Haka
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冠海雀 Japanese Murrelet (カンムリウミスズメ)-亞成

學名: Synthliboramphus wumizusume

英名: Japanese Murrelet

Family : Alcidae (海雀科). Length: 24-26 cm.

體小(25厘米)的黑、灰及白色海雀。額、頭頂及頸背青黑,頰及上喉灰色。眼上部頭側有白色條紋延至上枕部相交,嘴極短。上體灰黑,下體近白,兩脇灰黑。僅夏季具鳳頭,並為黑色尖形。冬羽大體似扁嘴海雀,但頭部的黑白色分佈不同。成鳥冬羽的羽冠缺乏或較短;頭頂黑色,兩側各具一條寬的白色帶斑;枕部中央與後頸中央暗灰色;幼鳥與成鳥冬羽相似。虹膜-褐黑;嘴-灰白;腳-黃灰。分佈範圍:日本及附近海域至薩哈林島。

分佈狀況:迷鳥。偶見於台灣海上。

The Japanese Murrelet, Synthliboramphus wumizusume also known as Crested Murrelet is a small bird that inhabits rocky islets and reefs in the warm waters of Japan, Russia and South Korea. It has black and bluish grey upper body and white underparts plumage. Breeding sites are crevices, burrows and hollows in rocks, the gaps in piles of stones, and among grasses on uninhabited islands. The northern limit of the breeding sites are the Nanatsujima Islands of Japan, while the most important breeding sites are Biro Island and the Izu Islands. The Japanese Murrelet lays eggs in March. Clutch size is slightly less than two eggs. Incubation duty was shared almost equally by both parents. The chicks are not fed in the nest, but leave the nest one to two nights after hatching.

 

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Taken on January 30, 2012