Hein van Grouwhttps://orcid.org/0000-0002-3600-4279,^1,* Germán Hernández-Alonso,^2,* Emily Cavill,³ M. Thomas P. Gilberthttps://orcid.org/0000-0002-5805-7195<sup>4

1</sup>Hein van Grouw, Bird Group, Natural History Museum, Akeman Street, Tring, Herts. HP23 6AP, UK, e-mail: .
²Germán Hernández-Alonso, Center for Evolutionary Hologenomics, The Globe Institute, Univ. of Copenhagen, DK-1353 Copenhagen, Denmark, e-mail: .
³Emily Cavill, Center for Evolutionary Hologenomics, The Globe Institute, Univ. of Copenhagen, DK-1353 Copenhagen, Denmark, e-mail: .
⁴M. Thomas P. Gilbert, Center for Evolutionary Hologenomics, The Globe Institute, Univ. of Copenhagen, DK-1353 Copenhagen, Denmark, e-mail:

^*These authors contributed equally to the manuscript.