1. a BirdLife International – Africa Partnership Secretariat , PO Box 3502 – 00100, Nairobi , Kenya
2. b Jomo Kenyatta University of Agriculture and Technology , PO Box 62000 – 00200, Nairobi , Kenya
3. c Ornithology Section , National Museums of Kenya , PO Box 40658 – 00100, Nairobi , Kenya
4. d British Trust for Ornithology , The Nunnery , Thetford, Norfolk , IP24 2PU , UK
5. e The Royal Society for the Protection of Birds , The Lodge , Sandy, Bedfordshire , SG19 2DL , UK