1. Norwegian Institute for Nature Research (NINA) Trondheim Norway
2. Centre for Biodiversity Dynamics, Norwegian University of Science and Technology (NTNU) Trondheim Norway
3. RSPB Centre for Conservation Science Sandy UK
4. PiedFly.Net, Yarner Wood Devon UK
5. Centre for Research in Animal Behaviour University of Exeter Exeter UK
6. Merseyside Ringing Group Merseyside UK
7. Forest of Dean Gloucestershire UK
8. 143 Daniells Welwyn Garden City Hertfordshire UK
9. British Trust for Ornithology, The Nunnery Thetford UK