About the Authors

Marta Lomas Vega

marta.l.vega@snm.ku.dk

Affiliation Center for Macroecology, Evolution and Climate, Natural History Museum of Denmark, University of Copenhagen, Copenhagen, Denmark

Mikkel Willemoes

Affiliation Center for Macroecology, Evolution and Climate, Natural History Museum of Denmark, University of Copenhagen, Copenhagen, Denmark

Robert L. Thomson

Affiliations Department of Biology, University of Turku, Turku, Finland, FitzPatrick Institute of African Ornithology, University of Cape Town, Cape Town, South Africa

Jere Tolvanen

Affiliation Department of Ecology, University of Oulu, Oulu, Finland

Jarkko Rutila

Affiliation Department of Environmental and Biological Sciences, University of Eastern Finland, Joensuu, Finland

Peter Samaš

Affiliation Department of Zoology and Laboratory of Ornithology, Palacky University, Olomouc, Czech Republic

Roine Strandberg

Affiliation Department of Biology, Lund University, Lund, Sweden

Tomáš Grim

Affiliation Department of Zoology and Laboratory of Ornithology, Palacky University, Olomouc, Czech Republic

Frode Fossøy

Affiliations Department of Biology, Norwegian University of Science and Technology, Trondheim, Norway, Norwegian Institute for Nature Research (NINA), Sluppen, Trondheim, Norway

Bård Gunnar Stokke

Affiliations Department of Biology, Norwegian University of Science and Technology, Trondheim, Norway, Norwegian Institute for Nature Research (NINA), Sluppen, Trondheim, Norway

Kasper Thorup

Affiliation Center for Macroecology, Evolution and Climate, Natural History Museum of Denmark, University of Copenhagen, Copenhagen, Denmark

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceptualization: MLV MW FF BGS KT. Data curation: MLV MW KT. Formal analysis: MLV KT. Funding acquisition: KT PS TG RLT BGS FF. Investigation: MLV MW JR KT. Methodology: MLV MW FF BGS KT. Project administration: KT MLV MW. Resources: MLV MW RLT JT JR PS RS TG FF BGS KT. Software: MLV MW KT. Supervision: KT. Validation: MLV MW RLT JT JR PS RS TG FF BGS KT. Visualization: MLV KT. Writing – original draft: MLV KT. Writing – review & editing: MLV MW RLT JT JR PS RS TG FF BGS KT.