Photo 27163238, (c) Eric Koberle, some rights reserved (CC BY-NC), uploaded by Eric Koberle

Attribution © Eric Koberle some rights reserved Uploaded by ekoberle Source iNaturalist Associated observations Photos / Sounds What Black-headed Gull (Chroicocephalus ridibundus) Observer ekoberle Date September 2018 Place Norway (Google, OSM) Date Added October 24, 2018 12:42 PM PDT 4 IDs Research Grade View Sizes small medium large original