1. H.T. Harvey & Associates Los Gatos CA 95032 USA
2. PRBO Conservation Science Petaluma CA 94954 USA
3. Department of Biomedical Sciences, College of Osteopathic Medicine Ohio University Athens OH 45701 USA
4. Cryospheric Sciences Laboratory/Code 615 NASA Goddard Space Flight Center Greenbelt MD 20771 USA
5. School of Biological Sciences University of Auckland Auckland New Zealand
6. Department of Animal Biology University of Illinois Urbana IL 61801 USA