Photo 82279689, (c) Yifei He 何一非, some rights reserved (CC BY), uploaded by Yifei He 何一非

Attribution © Yifei He 何一非 some rights reserved Uploaded by hesyifei Source iNaturalist Associated observations Photos / Sounds 3 photos What Cliff Swallow (Petrochelidon pyrrhonota) Observer hesyifei Date April 30, 2020 07:24 PM PDT Place Stanford, CA, USA (Google, OSM) Date Added July 3, 2020 12:50 AM PDT 2 IDs Research Grade View Sizes small medium large original