Movements and home-range of Mallards by WT-200 in Korea
Mallard (Anas platyrhynchos) is the abundant winter visitor in South Korea. Mallard migrates long distances between Russian Siberia and Korea. This species prefers a rice paddy area as their winter habitat. We captured birds using cannon-net, and attached the GPS-Mobile phone based Telemetry(WT-200) on Seven Mallards in the winter of 2011～2013. We were monitored wintering home-range and movement distance. We analyzed the tracking location data using ArcGIS 9.0 and calculated Kernel Density Estimation (KDE) and Minimum Convex
Polygon (MCP). The average home-range in the wintering ground by MCP was 118.8 ㎢(SD=70.1, n=7)and the maximum home-rang was 221.8 ㎢and the minimum was 27.7 ㎢. Extents of home-range by KDE were 60.0 ㎢(KDE 90%), 23.0 ㎢(KDE 70%) and 11.6 ㎢(KDE 50%). Mallard moved an average of 19.4 ㎞from start site(attach to WT-200 site), maximum moved was 33.2 ㎞and minimum moved was 9.4 ㎞. The average distance of 0.8 ㎞between GPS fixed point(range 0.2～1.6 ㎞), maximum moved was 19.7 ㎞. Mallard moved a very
short distance in wintering season and showed a very high water-dependent trends in wintering site.