1. Dept of Environmental and Forest Biology; State Univ. of New York, College of Environmental Science and Forestry; Syracuse, NY 13210 USA
2. U.S. Geological Survey, Southwest Biological Science Center, Grand Canyon Monitoring and Research Center; Flagstaff AZ USA
3. Roosevelt Wild Life Station, State Univ. of New York, College of Environmental Science and Forestry; Syracuse NY USA
4. Charles Darwin Foundation, Puerto Ayora; Gal pagos Ecuador
5. Dept of Electrical and Computer Engineering; Université Laval, Québec; QC Canada
6. Max Planck Inst. for Ornithology; Radolfzell Germany
7. e-obs GmbH; Gruenwald Germany
8. Wildcare Inst.; Saint Louis Zoo Saint Louis MO USA