2 Great Skuas found at lunchtime on Saturday had the decency to stay until I could get there at 1:50pm: 
But within 30 seconds of my arrival they took off…
… gained height to the north…
… before returning to the middle of F2, joining the small numbers of Arctic Terns that were present with the local Common Terns:
The Skuas remained on F2 for another 20 minutes, before departing high to the west. Good to bump into George Best at the reservoir too.