It is unusual for Channel Island Herring Gulls to travel as far as northern Spain for the autumn/winter, but a minority of birds regularly makes this journey. One such bird is White 7CJ5 seen today by Raquel Posada and César Álvarez in the Avilés Estuary. Equally unusual are reports of our Lesser Black-backed Gulls on the eastern (Mediterranean) coast of Spain (above Malaga) - so I was thrilled to learn that Black 4AL4 was at Castellon harbour yesterday (Pepe Greno).
Herring Gull White 7CJ5
Lesser Black-backed Gull Black 4AL4