Photo 59689565, (c) Tom Walker, some rights reserved (CC BY-NC), uploaded by Tom Walker

Attribution © Tom Walker some rights reserved Uploaded by agave6_tomwalker Source iNaturalist Associated observations Photos / Sounds What Great Black-backed Gull (Larus marinus) Observer agave6_tomwalker Date January 15, 2020 10:15 AM EST Place Provincetown, MA, USA (Google, OSM) Date Added January 15, 2020 05:46 PM EST Description immature 4 IDs Research Grade View Sizes small medium large original