Photo 44814308, (c) bjoerns, some rights reserved (CC BY-SA), uploaded by bjoerns

Attribution © bjoerns some rights reserved Uploaded by bjoerns Source iNaturalist Associated observations Photos / Sounds What Black-headed Gull (Chroicocephalus ridibundus) Observer bjoerns Date July 13, 2019 12:05 PM CEST Place Duisburg, Nordrhein-Westfalen, Germany (Google, OSM) Date Added July 13, 2019 06:05 PM CEST 3 IDs Research Grade View Sizes small medium large original Copyright