Acknowledgements
We are grateful to Frédéric Angelier, Muhammad Asghar, Els Atema,
Michaël Beaulieu, Staffan Bensch, Pierre Bize, Piérre Blevin, Olivier
Chastel, François Criscuolo, Adriana Dorado-Correa, Mathieu Giraudeau,
Dennis Hasselquist, Britt Heidinger, Lisa Jacquin, Alexander Kitaysky,
Sophie Lardy, Jimena López-Arrabé, Pat Monaghan, Jose Noguera, Joacim
Näslund, Mats Olsson, Marco Parolini, Lorenzo Pérez-Rodrígues, Sophie
Reichert, Nicky Rollings, Pablo Salmón, Manrico Sebastiano, Joanna
Sudyka, Mathilde Tissier, Oscar Vedder, Simon Verhulst, Hannah Watson,
Tony Williams, and Rebecca Young for sharing raw data of their published
work. We especially thank Mark Haussmann and Barbara Tschirren for
sharing their unpublished data on the Japanese quail. This study was
financially supported by the Finnish Cultural Foundation Varsinais-Suomi
Regional Fund (TK), Turku University Foundation, Finnish Cultural
Foundation (TK), the Ella & Georg Ehrnrooth Foundation (MB) and the
Turku Collegium for Science and Medicine (AS).