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Author Title Year Publication (up) Serial Volume Pages
Wauters, A. M.; Richard-Yris, M.-A.; Richard, J. P.; Foraste M. Internal and external factors modulate food-calling in domestic hens 1999 Animal Cognition 3306 2 1-10
Westergaard, G.C. Structural analysis of tool-use by tufted capuchins (Cebus apella) and chimpanzees (Pan troglodytes) 1999 Animal Cognition 3324 2 141-145
Wiltschko, W.; Balda, R.P.; Jahnel, M.; Wiltschko, R. Sun compass orientation in seed-caching corvids: its role in spatial memory 1999 Animal Cognition 3335 2 215-221
Theall, L.A.; Povinelli, D.J. Do chimpanzees tailor their gestural signals to fit the attentional states of others? 1999 Animal Cognition 3353 2 207-214
Spinozzi, G.; Natale, F.; Langer, J.; Brakke, K.E. Spontaneous class grouping behavior by bonobos (Pan paniscus) and common chimpanzees (P. troglodytes) 1999 Animal Cognition 3356 2 157-170
Werner, C. W.; Rehkämper, G. Discrimination of multidimensional geometrical figures by chickens: categorization and pattern-learning 1999 Animal Cognition 3359 2 27-40
Langen, T.A. How western scrub-jays (Aphelocoma californica) select a nut: effects of the number of options, variation in nut size, and social competition among foragers 1999 Animal Cognition 3387 2 223-233
Menke, C.; Waiblinger, S.; Foelsch, D.W.; Wiepkema, P.R. Social Behaviour and Injuries of Horned Cows in Loose Housing Systems 1999 Animal Welfare 5480 8 243-258
Mullin, M.H. MIRRORS AND WINDOWS: Sociocultural Studies of Human-Animal Relationships 1999 Annual Review of Anthropology 3534 28 201-224
Boysen, S.T.; Himes, G.T. Current Issues And Emerging Theories In Animal Cognition 1999 Annual Review of Psychology 2973 50 683-705