We are very grateful to the following people who helped in various ways with sample collection: Jérome Fuchs and Eric Pasquet (National Museum of Natural History, Paris), Sharon M. Birks (Burke Museum of Naturel History of Seattle), Charlotte Francesiaz, Benjamin Vollot and Gilles Balança (Sandwich Tern, France), Charles Collins (Elegant Tern, USA), Arnaud Lenoble (Royal Tern, Guadeloupe), Lorien Pichegru (Crested Tern, South Africa), Abdulmaula Hamza (Lesser Crested Tern, Libya) and Clive Barlow (The Gambia). Marcio Efe and Eli Bridge helped with genotyping and shared unpublished sequences. We thank Juan Antonio Gómez for advice and Miguel Chardí and Francisco Javier García-Gans for field assistance in Valencia (Spain). Mathias Grandpierre (Société pour l’Etude et l’Aménagement de la Nature dans le Sud-Ouest) helped with fieldwork at the Banc d’Arguin (France). All the experiments comply with the current laws of the country in which they were performed.Peer reviewedPostprin
