英国皇家天鹅顶峰开始每年一次的泰晤士河人口普查, 计数和标记天鹅。 UK's royal Swan Uppers begin annual census on the Thames, counting and marking swans.

国王的一年一度的天鹅人口普查是数百年来的传统,目前正在泰晤士河上进行。 The annual King's Swan Census, a centuries-old tradition, is underway on the River Thames. 在人口普查期间,天鹅被捕获、标记并释放,以监测其人口健康。 During the census, swans are caught, marked, and released to monitor their population health. 今年的活动延续了女王的天鹅大师（被称为天鹅上层）的皇家传统，他们乘坐传统船只在河上航行数天鹅。 This year's event continues the royal tradition of the Queen's swan masters, known as the Swan Uppers, who navigate the river in traditional boats to count the swans.