| Author |
Title |
Year |
Publication |
Serial |
Volume |
Pages  |
| Schilder, M.B. H. |
Interventions in a herd of semi – captive Plains zebras |
1990 |
Behavior |
1565 |
112 |
53-83 |
| BASHORE, T. L.; KEIPER, R.; TURNER ,J. W. JR; KIRKPATRICK J. F. |
The accuracy of fixed-wing aerial surveys of feral horses on a coastal barrier island |
1990 |
Journal of coastal research |
2221 |
6 |
53-56 |
| Heyes, C.M.; Dawson, G.R. |
A demonstration of observational learning in rats using a bidirectional control |
1990 |
Quarterly Journal of Experimental Psychology Section B: Comparative and Physiological Psychology |
1766 |
42 |
59-71 |
| Heyes CM; Dawson GR |
A demonstration of observational learning using a bidirectional control |
1990 |
Q. J. Exp. Psychol. |
3008 |
42 |
59 |
| McCall, C.A. |
A Review of Learning Behavior in Horses and its Application in Horse Training |
1990 |
Journal of Animal Science |
1992 |
68 |
75-81 |
| Boesch C; Boesch H |
Tool use and tool making in wild chimpanzees |
1990 |
Folia Primatol. |
2983 |
54 |
86 |
| Thouless, C.R. |
Feeding competition between grazing red deer hinds |
1990 |
Animal Behaviour. |
4267 |
40 |
105-111 |
| Chaudhuri, M.; Ginsberg, J.R. |
Urinary androgen concentrations and social status in two species of free ranging zebra (Equus burchelli and E. grevyi). |
1990 |
Journal of Reproduction and Fertility |
987 |
88 |
127-133 |
| Visalberghi E |
Tool use in Cebus |
1990 |
Folia Primatol. |
3045 |
54 |
146 |
| Franke Stevens, E. |
Instability of harems of feral horses in relation to season and presence of subordinate stallions |
1990 |
Behaviour |
1632 |
112 |
149-161 |
