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Food and Feeding Grounds of the Goldeneye Bucephala clangula (L.) on the Swedish West Coast

Olof Pehrsson
Ornis Scandinavica (Scandinavian Journal of Ornithology)
Vol. 7, No. 1 (May 15, 1976), pp. 91-112
Published by: Wiley on behalf of Nordic Society Oikos
DOI: 10.2307/3676178
Stable URL: http://www.jstor.org/stable/3676178
Page Count: 22
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Food and Feeding Grounds of the Goldeneye Bucephala clangula (L.) on the Swedish West Coast
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Abstract

The importance of food for temporal and spatial variations in the non-breeding occurrence of Goldeneyes in the Swedish west coast archipelago was studied 1962-1972. Abundance and composition of available food were found to regulate the selection of feeding grounds. As a consequence of food competition in winter quarters, the Goldeneye may have adopted smaller food items than some other diving ducks. Comparisons are made with Goldeneye feeding habits in the less saline Baltic, where Mytilus grounds are of greater importance but seeds from subaquatic plants of lesser importance than on the Swedish west coast.

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