以下为句子列表：
英文: Plants of grass family were the main food of Barheaded Geese, accounting for 0% detected in the feces. White Clovers accounted for %, Sedge family plants accounted 97%, crops accounted for % and the other materials accounted for %.
中文: 禾本科植物是斑头雁主要食物，在其粪便中的平均检出率是0％，白花三叶草平均为％，莎草科植物为97％，农作物仅占％，其他的材料为 ％。
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