Photo 2392839, (c) John Bray, some rights reserved (CC BY-NC), uploaded by John Bray

Attribution © John Bray some rights reserved Uploaded by blacksheep509 Source iNaturalist United Kingdom Associated observations Photos / Sounds 2 photos What Eurasian Crag Martin (Ptyonoprogne rupestris) Observer blacksheep509 Date September 1, 2015 Place Rio Hozgarganta (Google, OSM) Date Added September 17, 2015 12:26 AM CEST Description Summer breeding colony preparing to cross to Africa 3 IDs Research Grade View Sizes small medium large original