Interlopers

On a recent trip to Sussex Wildlife Trust, Rye Harbour Narure Reserve, we were sitting in one of the hides when suddenly a ruckus started going on, birds fleeing, the comorant tree emptied and the ducks and swans swiming away with family.
Most birders would think 'bird of prey', so we looked and looked but no. it was these guys on a raft!!
Serously??
At any point do you think they realised something was a bit off, the hide perhaps or the lens's pointed at them...apparently not. LOL