Main Ref. | SAUP Database, 2006 |
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Remarks | Found on beach and shoreline (Ref. 116102). Coastal. Pelagic. Exhibits surface-seizing and plunge-diving behavior (Ref. 356). Opportunistic feeders. Feeds on small fish and small invertebrates, mainly crustaceans and insects; as well as faeces and carcasses. An arctic breeder; breeding area almost circumpolar with the exception of the Eurasian coast of Arctic Ocean. Nests on islets and flat, moist, grassy terrain of tundras, in pairs or small colonies. Often nests within colonies of Arctic terns (Sterna paradisaea). Common clutch size of 2 eggs. Migrates over oceanic waters southbound to western South America and south-southwestern Africa (Ref. 95138). |
Marine - Neritic | Marine - Oceanic | Brackishwater | Freshwater | |
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Marine zones / Brackish and freshwater bodies |
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Substrate | |
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Substrate Ref. | |
Special habitats | |
Special habitats Ref. |
Ref. | Blomqvist, S. and E. Magnus, 1981 |
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Associations | colony-forming/symphorism; |
Associated with | |
Association remarks | |
Parasitism |
Feeding type | |
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Feeding type Ref. | |
Feeding habit | |
Feeding habit Ref. |
Estimation method | original sample | unfished population | Remark | ||
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Troph | s.e. | Troph | s.e. | ||
From diet composition | |||||
From individual food items | 4.08 | 0.69 | Trophic level estimated from a number of food items using a randomized resampling routine. | ||
Ref. |