This is utterly shameful and heartbreaking.
Sadly I saw this behaviour and ignorance, this weekend also on the Thames where we currently have goslings, signets and ducklings enjoying their first swimming. ๐ฅ
This part from later in the video broke my heart... a floating Swan egg that the Swan tries to pull under itself as if incubating it on a nest... ๐๐
How did it get in the water?