This gull was ringed as >2CY near ZB.PRZYKONA, RADYCZYNY, PRZYKONA, Poland (52°0'0.0''N, 18°39'0.0''E) on June 4, 2011, and seen here again on June 10, 2015. In France it was reported near the July 20, 2017 observation site on Oktober 28, 2013. So it winters approximately 1520 km West of its breeding colony.