1. Animal Ecology, Department of Ecology and Genetics, Evolutionary Biology Centre, Uppsala University , Norbyvägen 18 D, 752 36 Uppsala , Sweden
2. Department of Medical Biochemistry and Microbiology, Uppsala University , 751 23 Uppsala , Sweden
3. Biomolecular Engineering, University of California , 95064 Santa Cruz, CA , USA
4. Department of Biology, University of Washington , Seattle, WA 98105 , USA
5. Yamashina Institute for Ornithology , 115 Konoyama, Abiko, Chiba 270-1145 , Japan
6. Department of Bioinformatics and Genetics, Swedish Museum of Natural History , P.O. Box 50007, 104 05 Stockholm , Sweden
7. State Key Laboratory of Biocontrol, School of Ecology, Sun Yat-sen University , Shenzhen 518107 , China
8. Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences , 100101 Beijing , China
9. Department of Veterinary Integrative Biosciences, Texas A&M University , College Station, TX 77843 , USA