Published in: Ostrich: Journal of African Ornithology
Volume 48, issue 3-4, 1977 , pages: 110–121
DOI: 10.1080/00306525.1977.9634088
Author(s): RonaldL. TilsonResearch Associate: Desert Ecological Research Unit,, CharlesF. LeckDepartment of Zoology, U.S.A., M.C. Roberts,, H.N. Chittenden,, G.R. BatchelorDivision of Nature Conservation,, J.S. PringlePhysics Department, South Africa, S.T. Madden,, J.M. Winterbottom,, J. van Heerden,, C.J. StutterheimDepartment of Zoology, South Africa, Nicholas Wood, U.K.


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