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Supplementary Material – Journal of Ornithology Fuelling for the Sahara crossing – variation in site use and the onset and rate of spring mass gain by thirty-eight Palearctic migrants in the western Sahel NICHOLAS J. BAYLY 1* , PHILIP W. ATKINSON 2 & STEPHEN J.R. RUMSEY 1
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Supplementary Material – Journal of Ornithology Fuelling for the Sahara crossing – variation in site use and the onset and rate of spring mass gain by thirty-eight Palearctic migrants in the western Sahel NICHOLAS J. BAYLY1*, PHILIP W. ATKINSON2 & STEPHEN J.R. RUMSEY1 1The Wetland Trust, Elms Farm, Pett Lane, Icklesham, Winchelsea, East Sussex, TN36 4AH, UK 2British Trust for Ornithology, The Nunnery, Thetford, Norfolk, IP24 2PU, UK *Author for correspondence: E-mail: nick.bayly@selva.org.co Tel. (++57) 3212189249 APPENDIX: Graphs showing the daily mass (small points) of 25 migrant African-Palearctic migrant species at the Parc National de Djoudj, Senegal from 11 November to 20 April together with the mean weekly mass (large points and fitted smooth trend line) and the number of turning points identified in the data.