Citation
Bayly, N.J., Atkinson, P.W. & Rumsey, S.J.R. 2012. Fuelling for the Sahara crossing: variation in site use and the onset and rate of spring mass gain by 38 Palearctic migrants in the western Sahel. Journal of Ornithology 153: 945. doi:10.1007/s10336-012-0823-5