089, the ringed male Mute Swan, was acting very aggressively towards both birds, driving both of them out of the water, as can seen in this photo. He was particularly aggressive towards one bird, grabbing it by the neck on many occasions.
Whooper Swan and 089
I left at about 9:30am and the birds were reported on another 2 occasions, but they had gone this morning, allowing 089 and his partner time to calm down. Hopefully, the 2 Whoopers are now well on their way to Iceland.