During the breeding season, some Eurasian Oystercatchers (Haematopus ostralegus osculans) in Yubu Island foraged in the open mudflat area nearby the breeding ground, instead of the tide water line area, main feeding site throughout the year. We found significant differences in foraging behavior and prey species diversity between the two different feeding site types. Even though the birds took more steps for most probably searching preys, their feeding success was much lower in the open mudflat area than the tide water line area. The multiple peck and boring methods were more frequently adopted to catch polychaetes on the open mudflat area, whereas the single peck method was dominant and gastropods and bivalves were main preys in the tide water line area. This study suggests that the bird shows flexible foraging strategy of shifting feeding site, foraging behavior and preys for better reproductive success.

Abstract
 서 론
 재료 및 방 법
  1. 연구지역
  2. 섭식행동 기록
  3. 섭식행동 및 먹이원 분석
  4. 통계 분석
 연구 결 과
  1. 섭식행동 및 성공률 비교
  2. 주요 먹이원 섭식비율 비교
 논 의
 적 요
 References

• 이상연(국립생태원 생태조사연구실, 전남대학교 생물과학·생명기술학과) | Lee Sang-Yeon (Division of Ecological Survey Research, National Institute of Ecology, Department of Biological Sciences and Biotechnology, Chonnam National University)
• 최유성(국립생태원 생태기반연구실, 국립생물자원관 동물자원과) | Yu-Seong Choi (Division of Basic Research, National Institute of Ecology, Animal Resources Division, National Institute of Biological Resources Incheon 22689, Republic of Korea) Corresponding author
• 주성배(국립생태원 생태기반연구실) | Sungbae Joo (Division of Basic Research, National Institute of Ecology) Corresponding author
• 정길상(국립생태원 생태기반연구실) | Gilsang Jeong (Division of Basic Research, National Institute of Ecology)
• 유영한(공주대학교 생명과학과) | Young-Han You (Department of Biological Sciences, Kongju National University)