1. Zoological Museum Natural History Museum Copenhagen University Universitetsparken 15 Copenhagen Oe DK‐2100 Denmark
2. Centre for Macroecology, Evolution and Climate GLOBE Institute University of Copenhagen Universitetsparken 15, Building 3 Copenhagen Oe DK‐2100 Denmark
3. Department of Biological Sciences DST/NRF Centre of Excellence at the Percy FitzPatrick Institute of African Ornithology University of Cape Town Rondebosch 7701 South Africa
4. Department of Bioinformatics and Genetics Swedish Museum of Natural History PO Box 50007 Stockholm 10405 Sweden
5. Department of Integrative Biology Museum of Vertebrate Zoology University of California 3101 Valley Life Science Building Berkeley CA 94720‐3160 USA