1. Department of Aerospace Engineering, University of Illinois at Urbana-Champaign, IL, USA
2. Department of Biology, The University of Mississippi, MS, USA
3. Department of Integrative Biology and Physiology, University of California, Los Angeles, USA
4. Department of Cognitive Biology, University of Vienna, and Konrad Lorenz Institute for Ethology, University of Veterinary Medicine, Vienna, Austria
5. Department of Aerospace Engineering, Georgia Institute of Technology, USA
6. Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, IL, USA
7. Max Planck Institute for Ornithology, Radolfzell, Germany and Dept. of Biology, University of Konstanz, Konstanz, Germany
8. Departments of Integrative Biology and Physiology & Ecology and Evolutionary Biology, University of California at Los Angeles and Smithsonian Tropical Research Institute, Panama City, Panama