VOICED : A centuries old British tradition is far from a swan song

Swan upping is a centuries-old tradition on the River Thames, originally for marking swans as a food source for the Crown. Today, it focuses on conservation and education, with swans being checked for health and injuries. Despite challenges like population decline due to flooding and dog attacks, the tradition continues with historical practices and ends with a toast to the Queen.

What modern purposes does the tradition of Swan upping serve today?

What challenges have Swans faced in recent years according to the text?