In East Asia, migrant species breed in Siberia and northeast China, and in autumn follow routes through Japan or Korea, past Taiwan and Hong Kong. Some even cross the equator and take up temporary residence in the southern hemisphere. When they catch sight of wetlands along the way with an agreeable climate and plenty of plant life to feed on, they come down to land.
在東亞，候鳥在西伯利亞、東北繁殖，秋後天地變色，鳥兒順著日、韓一路而來，途經台灣、香港甚至翻過赤道寄居南半球，旅程上有氣候合宜、草料豐富的濕地即落腳停棲。