Long Flight North?

At the Gann this evening, the 21 Brents inc U3 were quite vocal & seemed restless, then they had a bath & five minutes later took off, heading first out in the bay & then gaining height swung round to the North vanishing in the distance. 2 Grey Plover also there, constantly calling - they too took off  & vanished high into the sky over Mullock - Leaving me to marvel at the wonderful GPS systems that birds have.....  Also 11 Ringed Plover, 5 Dunlin. No Sandwich Terns though.

 Could this be the last photo of U3 for a while?