Photo 4657336, (c) Jake Gross, some rights reserved (CC BY-SA), uploaded by Jake Gross

Attribution © Jake Gross some rights reserved Uploaded by pteridude Source iNaturalist Associated observations Photos / Sounds What Western Gull (Larus occidentalis) Observer pteridude Date August 10, 2016 04:34 AM HST Place San Francisco Bay, San Francisco, CA, US (Google, OSM) Date Added August 23, 2016 08:25 PM HST 2 IDs Research Grade View Sizes small medium large original