Photo 2329820, (c) Liam O'Brien, some rights reserved (CC BY-NC), uploaded by Liam O'Brien

Attribution © Liam O'Brien some rights reserved Uploaded by robberfly Source iNaturalist Associated observations Photos / Sounds What Checkered White (Pontia protodice) Observer robberfly Date August 31, 2015 Place Hayward Shoreline Interpretive Center (Google, OSM) Date Added August 31, 2015 02:45 PM PDT Description Went out with Tony to see my first Black Skimmers... 7 IDs Research Grade View Sizes small medium large original