1. Swiss Ornithological Inst Sempach Switzerland
2. Inst. for Biodiversity and Ecosystem Dynamics,Univ of Amsterdam
3. Cornell Lab of Ornithology Ithaca NY USA
4. Corix Plains Inst., Univ. of Oklahoma Norman OK USA
5. Natural Resources Inst.,Univ. of Greenwich Chatham Kent UK
6. Rothamsted Research Harpenden Hertfordshire UK
7. Ecology and Evolutionary Biology, Univ. of Tennessee Knoxville TN USA
8. Biodiversity Unit, Dept of Biology, Lund Univ Sweden
9. Centre for Ecology and Conservation, and Environment and Sustainability Inst., Univ. of Exeter Penryn Cornwall UK
10. College of Plant Protection, Nanjing Agricultural Univ Nanjing P. R China