Attributes / relations provided by
♦ ¹Williams, J. B., Siegfried, W. R., Milton, S. J., Adams, N. J., Dean, W. R. J., du Plessis, M. A. and Jackson, S. (1993), Field Metabolism, Water Requirements, and Foraging Behavior of Wild Ostriches in the Namib. Ecology, 74: 390–404.