Batalha, Helena R.
Wright, David J.
Barr, Iain
Collar, Nigel J.
Richardson, David S.
Funding for this research was provided by:
Fundação para a Ciência e a Tecnologia (SFRH/BD/84102/2012)
Rufford Foundation (GB) (13635-1)
African Bird Club
BirdLife International
Royal Society for the Protection of Birds
University of East Anglia
A.G. Leventis Foundation (CY) (R201354)