Photo 23219169, (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 13 photos What Black-headed Gull (Chroicocephalus ridibundus) Observer bjoerns Date August 15, 2018 06:46 PM CEST Place Duisburg Mitte, Duisburg, Deutschland (Google, OSM) Date Added August 16, 2018 09:52 AM CEST 2 IDs Research Grade View Sizes small medium large original Copyright