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Citations
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Keiper, R. (1976). Social organization of feral ponies. Proc Pennsyl Acad Sci, 50, 69–70.
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Houpt, K. A., & Keiper, R. (1982). The position of the stallion in the equine dominance hierarchy of feral and domestic ponies. J. Anim Sci, 54(5), 945–950.
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Boyd, L., & Keiper, R. (2005). Behavioural ecology of feral horses. In D. S. Mills, & McDonnell S. M. (Eds.), The domestic horse: the origins, development, and management of its behaviour. Cambridge: Cambridge University Press.
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BASHORE, T. L., KEIPER, R., TURNER, J. W. J. R., & KIRKPATRICK J. F. (1990). The accuracy of fixed-wing aerial surveys of feral horses on a coastal barrier island. J. coast. res, 6, 53–56.
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