1. Canary Islands' Ornithology and Natural History Group (GOHNIC) Buenavista del Norte Canary Islands Spain
2. Dept of Evolutionary Ecology, Estación Biológica de Doñana (CSIC) Seville Spain
3. Dept of Biology, Washington Univ. in St Louis St Louis MO USA
4. Portuguese Society for the Study of Birds Lisboa Portugal
5. Tigh Na Craig East Bay Mallaig UK
6. Faroe Marine Research Inst. Faroe Islands
7. Parque Ecológico do Funchal Madeira Portugal
8. Servicio de Medio Ambiente, Cabildo Insular de La Palma Santa Cruz de La Palma Canary Island Spain
9. Ecology and Evolution Research Group, Inst. de Productos Naturales y Agrobiología (IPNA‐CSIC), La Laguna Tenerife Canary Islands Spain
10. Research Unit of Biodiversity (UO‐CSIC‐PA), Oviedo Univ., Campus of Mieres, Research Building Mieres Asturias Spain