Mallard migration and regional movement timing, distance, and direction data, 2018–2020
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The mallard (Anas platyrhynchos) is an abundant and wide-spread duck species that exhibits considerable variation in migratory behavior due to a relatively large body...
绿头鸭（Anas platyrhynchos）是一种种群数量丰富、分布广泛的鸭类物种，其迁徙行为存在显著差异，这源于其相对较大的躯体……
