Photo 2270891, (c) Duarte Frade, some rights reserved (CC BY), uploaded by Duarte Frade

Attribution © Duarte Frade some rights reserved Uploaded by duarte Source BioDiversity4All Associated observations Photos / Sounds What Common Tern (Sterna hirundo) Observer duarte Date August 7, 2015 Place Porto Santo, Madeira, Portugal (Google, OSM) Date Added August 16, 2015 10:46 AM WEST Description Juvenile. Tags Sterna hirundo, Porto Santo, Madeira, Portugal 3 IDs Research Grade View Sizes small medium large original Copyright