Photo 33119247, (c) Ken Rosenthal, some rights reserved (CC BY-NC), uploaded by Ken Rosenthal

Attribution © Ken Rosenthal some rights reserved Uploaded by krosenthal Source iNaturalist Associated observations Photos / Sounds What Great Black-backed Gull (Larus marinus) Observer krosenthal Date March 19, 2019 01:15 PM EDT Place Delaware Bay, United States (Google, OSM) Date Added March 19, 2019 10:43 PM EDT 2 IDs Research Grade View Sizes small medium large original