Bird Research
Online ISSN : 1880-1595
Print ISSN : 1880-1587
ISSN-L : 1880-1587
Short Communications
Digging as a feeding behavior of Bewick's Swan in the Echigo Plain, central Japan
Tomokazu WATANABE, Yasushi SUZUKI
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Keywords: Cygnus columbianus, Eleocharis kuroguwai, food item, tubers
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2007 Volume 3 Pages S1-S5

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Abstract
Digging as a foraging behavior of Bewick's Swans was observed only rarely in the rice paddy fields of Echigo Plain. Fecal analysis indicated that the food items consumed by swans during digging were primarily tubers of Eleocharis kuroguwai.
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© 2007 by Japan Bird Research Association
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