This Black-headed Gull was marked as adult near the Inseln Bömke und Werder, Germany (54° 0' 0 (53.95) N, 14° 5' 0 (14.03) E) on May 1st, 2015. The ringing location is approximately 670 km ENE of Leiden. The bird was also present on February 6, 2016. This bird received a new metal ring, Arnhem 2515717, and color ring W[EXN8] in Groningen on January 25, 2019. It was seen regularly at Swinoujscie plaza, Zachodniopomorskie, POLAND (5.356,37 N, 1.413,53 E).