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- W2089931460 abstract "The use of feeding habitats by breeding Eurasian wigeon (Anas penelope) was studied in two lakes in western Norway in 1983 and 1988. During the early and late breeding periods of both years, wigeon preferred to feed on agricultural fields surrounding parts of the lakes. Most individuals preferred to feed among emergent hydrophytes, whereas open water was used less than expected. Beds of floating hydrophytes were not used during the early period but were used in proportion to their availability during the late period. Use of and preference for feeding habitats varied among individuals and lakes and between years. Temporary availability of foods is the most important factor in the birds' selection of terrestrial and aquatic feeding habitats during the breeding season. Because one of the lakes has undergone eutrophication, which has affected the use of feeding habitats by wigeon between years, I suggest that the quality of feeding habitats in this lake can be improved by artificially removing the dense aquatic vegetation that covers much of the surface area. Improvement of the surrounding agricultural fields is another management alternative that could benefit grazing wigeon." @default.
- W2089931460 created "2016-06-24" @default.
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- W2089931460 date "1993-05-01" @default.
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- W2089931460 title "Use of feeding habitats by breeding Eurasian wigeon" @default.
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