Observations of moulting eider and breeding common eider Somateria mollissima at Nordaustlandet, Svalbard, in 1979
A survey on the Common Eider Somateria mollissima in wing-feather moult and females with young was carried out in connection with Norsk Polarinstitutt's expedition to Svalbard in July and August 1979. A total of 3450 moulting eider were found on a water area of approximately 2500 km2; 18% of th...
| Published in: | Polar Research |
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| Main Author: | |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Norwegian Polar Institute
1984
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| Subjects: | |
| Online Access: | https://polarresearch.net/index.php/polar/article/view/2532 https://doi.org/10.3402/polar.v2i1.6959 |
| Summary: | A survey on the Common Eider Somateria mollissima in wing-feather moult and females with young was carried out in connection with Norsk Polarinstitutt's expedition to Svalbard in July and August 1979. A total of 3450 moulting eider were found on a water area of approximately 2500 km2; 18% of these were flightless. Females dominated in the population with about 82%. Of the breeding population, 109 females with 336 young were found. The average ratio of female to young has been calculated at 1 : 3.08. This ratio in relation to other studies of eider productivity is discussed briefly. |
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