Answers are grounded in this paper and cite their sources.
S. A. Grant, L. Torvell, H. K. Smith, D. E. Suckling, T. D. A. Forbes, J. Hodgson, Comparative Studies of Diet Selection by Sheep and Cattle: Blanket Bog and Heather Moor, Journal of Ecology, Vol. 75, No. 4 (Dec., 1987), pp. 947-960
No takes yet. Share an insight, caveat, or question.
Grant et al. (1987) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: