I have a feeling I've seen them before somewhere.
They've obviously come from bluer water.

1. You have. They were on the Basingstoke Canal in 2020, and further downstream on the Thames in 2022. (They're rather slow rowers). In the absence of gulls or swans, something was needed in that otherwise featureless stretch of water.

2. Colour dissonance corrected. Well spotted!

Nicely corrected, but he needs to mind the blossom with that stick.

That blossom is no oarkid.