Photo 6391243, (c) John Barkla, some rights reserved (CC BY), uploaded by John Barkla

Attribution © John Barkla some rights reserved Uploaded by john_barkla Source iNaturalist NZ Associated observations Photos / Sounds What Caspian Tern (Hydroprogne caspia) Observer john_barkla Date February 26, 2017 02:11 PM NZDT Place Otago, NZ (Google, OSM) Date Added February 26, 2017 07:11 PM NZDT Description The large white birds amongst the oystercatchers. On estuarine mud flats. Tags estuary, mud flat 2 IDs Research Grade View Sizes small medium large original