Aves |
Ciconiiformes |
Charadriidae
環境： 環境 / 氣候帶 / 深度上下限 / 配送範圍
生態學
Others. Temperate
Northeast Pacific: Canada.
初熟時的長度 / 大小 / 重量 / 年齡
成熟度: Lm ? range ? - ? cm
They are agitated with boat distances of less than 30 meters when they are nesting, and less agitated during roosting (Ref. 94991). Nests on the surface of barren rocky islet or beach (Ref. 94991). Rocky-shore specialist concentrated along Pacific coast of northwestern North America (Ref. 87784). Feed mainly on intertidal marine invertebrates, primarily bivalves (clams and mussels) and other mollusks (limpets, whelks, and chitons); and secondarily, crabs, sea urchins, isopods, and barnacles. Contrary to its common name, oysters are rarely part of its diet (Ref. 95118). Uses rocky shores for nesting and rarely breed elsewhere. Nests prone to destruction by tides, particularly during storms; >10% of nests possibly lost to storm surges (Ref. 87784).
生命週期和交配行為
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
主要參考資料
參考文獻 | 合作者 | 合作者
Chatwin, T.A. 2010 Set-back distances to protect nesting and roosting seabirds off Vancouver Island from boat disturbance. Thesis in MSc in Environment and Management, Royal Roads University, Victoria, British Columbia, Canada, 59p. (參考文獻 94991)
IUCN 瀕危狀態
(參考文獻 130435: Version 2025-2 (Global))
CITES狀態 (參考文獻 108899)
Not Evaluated
Not Evaluated
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