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pro vyhledávání: '"Jennifer Vonk"'
Publikováno v:
Animal Behaviour. 84:953-964
Despite their large relative brain size, bears have been neglected in studies of comparative cognition in comparison to their fellow carnivores, the social canines and pinnipeds. Here, three captive adult American black bears were presented with a se
Autor:
Amanda S. Richardson, Daniel J. Povinelli, Sarah F. Brosnan, Susan P. Lambeth, Joseph Henrich, Jennifer Vonk, Steven J. Schapiro, Joan B. Silk
Publikováno v:
Animal behaviour. 75(5)
We conducted experiments on two populations of chimpanzees, Pan troglodytes, to determine whether they would take advantage of opportunities to provide food rewards to familiar group members at little cost to themselves. In both of the experiments de
Autor:
Michael J. Beran, Jennifer Vonk
Publikováno v:
Animal Behaviour. 84:231-238
Studies of bear cognition are notably missing from the comparative record despite bears' large relative brain size and interesting status as generalist carnivores facing complex foraging challenges, but lacking complex social structures. We investiga
Publikováno v:
Animal Behaviour. 54:635-642
Adult male Mongolian gerbils, Meriones unguiculatusgestated in intrauterine positions between two female fetuses (2F males) are less likely than are adult males gestated between two male fetuses (2M males) to impregnate strange female gerbils with wh