Photo 715302, (c) roy pilcher, some rights reserved (CC BY-NC), uploaded by roy pilcher

Attribution © roy pilcher some rights reserved Uploaded by rwp84 Source iNaturalist Associated observations Photos / Sounds What Great Black-backed Gull (Larus marinus) Observer rwp84 Date August 10, 1987 Place Star Island, NH (Google, OSM) Date Added March 10, 2014 04:41 PM EDT 3 IDs Research Grade View Sizes small medium large original