Black-legged Kittiwakes Rissa tridactyla, breeding in the port of Boulogne-sur-Mer, France. This location is probably one of the easiest ways to closely observe this species on mainland Europe. July 2016.
They have taken up many of the ledges and window sills of the buildings around the port:
Many large juveniles could be seen:
On the nearby beach of Boulogne-sur-Mer (near Nausicaá), the fledged juveniles were resting among the Mediterranean Gulls and Black-headed Gulls, waiting for their parents to feed them: