Photo 29017029, (c) Sandy Wolkenberg, some rights reserved (CC BY), uploaded by Sandy Wolkenberg

Attribution © Sandy Wolkenberg some rights reserved Uploaded by sadawolk Source iNaturalist Associated observations Photos / Sounds What Great Black-backed Gull (Larus marinus) Observer sadawolk Date December 9, 2018 12:47 PM EST Place Overpeck County Park, Ridgefield Park, NJ, US (Google, OSM) Date Added December 9, 2018 07:25 PM EST 2 IDs Research Grade View Sizes small medium large original