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Bard Jbl,. (1977). A unity underlying the different zebra stripping patterns. J Zool Lond, 183, 527–539.
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Bouman Jg,. (1977). The future of Przewalski horses. Int Zoo Yearbook, 17, 62–68.
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Fagen Rm, G. T. (1977). Play behavior and exercise in young ponies. Behav Ecol Sociobiol, 2, 267–269.
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Francis-Smith, K., & Wood-Gush, D. G. M. (1977). Copropgagia as seen in thoroughbred foals. Equine Vet J, 9(3), 155–157.
Abstract: Four Thoroughbred foals were seen to quickly eat part of the faeces deposited by their own dams on some 40 per cent of the mare-defaecating occasions observed between the second and fifth week after birth. They did not do it before or after this period. This behaviour was thought to be a feeding pattern which formed a normal part of the foal's development.
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Fretz Pb,. (1977). Behavioral virilization in a brood mare. Appl Anim Ethol, 3, 277–280.
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Green Nf, G. H. (1977). The wild horse population.... Proc National Wild Horse Forum, 1, 59–65.
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HANSEN et al,. (1977). Foods of wild horses, deer and cattle in the Douglas Mountain Area, Colorado. J Range Mgmt, 30, 116–118.
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Keiper Rr,. (1977). Observations on the nocturnal behavior of feral ponies. Proc Pennsyl Acad Sci, 51, 57–58.
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Klingel H,. (1977). Communication in Perissodactyla. (pp. 715–727,).
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Klingel H,. (1977). Observations on Social Organization and Behaviour of African and Asiatic Wild Asses (Equus africanus and E. hemionus). Z. Tierpsychol., 44, 323–331.
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