Wild horses are becoming dependent on transitional environments between domesticity and wildness. In Dutch new nature areas they are learning to perform roles as ecological surrogates for their extinct ancestors. In the U.S. wild horses are 'feral' and exist in numbers deemed to be in excess of the carrying capacity of semi-arid public range lands. The federal government is removing and relocating thousands to long-term holding pastures. The capabilities approach of Nussbaum (2006) allows us to evaluate this transitional environment against (...) a threshold of opportunities to exercise capabilities judged to be central to their flourishing as wild horses. (shrink)