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these are two roan antelope grazing in high grass shrubby area within a nature reserve in South Africa. Such preserves have been essential to the maintenance of many species of grazing mammals in southern Africa, and the SA National Park system has been at the forefront of the conservation effort. See http://onlinelibrary.wiley.com/doi/10.1111/j.1755-263X.2009.00081.x/abstract