Journal of Ecology and Environment

한국생태학회 (The Ecological Society of Korea)
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A Study of Feeding Methods in Five Species of Herons and Egrets in Korea

  • Choi, Yu-Seong (Korea Institute of Ornithology and Department of Biology, Kyung-Hee University) ;
  • Kwon, In-Ki (Korea Institute of Ornithology and Department of Biology, Kyung-Hee University) ;
  • Yoo, Jeong-Chil (Korea Institute of Ornithology and Department of Biology, Kyung-Hee University)
  • 발행 : 2008.05.30
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초록

Feeding methods of five species of herons and egrets were studied in an agricultural landscape in Asan city, Chungcheongnam-do, Korea in 2006. Grey herons primarily hunted while standing, whereas great egrets fed while walking slowly. Two smaller species, little and cattle egrets, were active foragers, feeding both while walking quickly and walking slowly. Little egrets were the only species using the foot stirring method. The medium-sized heron, intermediate egrets, foraged mainly while walking slowly or leaning. For grey herons, great egrets and little egrets, the frequency of use of different feeding methods was different between habitats: these species used the leaning method more frequently in rice fields than in reservoirs and ditches. Also, most herons (all species other than great egrets) showed seasonal changes in their feeding methods that are related to changes in habitat condition.

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참고문헌

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