Acknowledgments
I would like to thank Anne Previato and Jérôme Fuchs from the Museum National d’Histoire Naturelle in Paris as well as Chantal Cambon and Adeline Rouilly from the Museum d’Histoire Naturelle in Nîmes for access to the bird collections. Furthermore, I wish to acknowledge nature photographer Gilbert Lacassin for use of the image material. Editorial assistance, in the form of language editing and correction, was provided by XpertScientific Editing and Consulting Services.