Ravens, Corvus corax , differentiate between knowledgeable and ignorant competitors
نویسندگان
چکیده
منابع مشابه
Social learning in common ravens, Corvus corax.
We conducted an experiment to investigate whether the presence of a conspecific model can promote the acquisition of a motor task in common ravens. For this purpose, dyads, either of control birds or of model-observer pairings, were allowed to operate together in an arena with a set of identical boxes. Each box consisted of two compartments each containing a reward of three pieces of meat. The ...
متن کاملTolerance and reward equity predict cooperation in ravens (Corvus corax)
Cooperative decision rules have so far been shown experimentally mainly in mammal species that have variable and complex social networks. However, these traits should not necessarily be restricted to mammals. Therefore, we tested cooperative problem solving in ravens. We showed that, without training, nine ravens spontaneously cooperated in a loose-string task. Corroborating findings in several...
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The ability to follow gaze (i.e. head and eye direction) has recently been shown for social mammals, particularly primates. In most studies, individuals could use gaze direction as a behavioural cue without understanding that the view of others may be different from their own. Here, we show that hand-raised ravens not only visually co-orient with the look-ups of a human experimenter but also re...
متن کاملAn ‘unkindness’ of ravens? Measuring prosocial preferences in Corvus corax
http://dx.doi.org/10.1016/j.anbehav.2016.11.018 0003-3472/© 2016 Published by Elsevier Ltd on beha In recent years, there has been considerable research effort to determine whether other species exhibit prosocial motivations parallel to those of humans; however, these studies have focused primarily on primates, and with mixed results. We presented captive ravens with a modified prosocial choice...
متن کاملOntogeny of Social Relations and Coalition Formation in Common Ravens (Corvus corax)
The social intelligence hypothesis, originally developed for primates to explain their high intelligence and large relative brain size, assumes that challenges posed by social life in complex societies with many group members lead to the evolution of advanced cognitive abilities. In birds, pair-bonded species have larger brains than non-pair bonded species, indicating that the quality of social...
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ژورنال
عنوان ژورنال: Proceedings of the Royal Society B: Biological Sciences
سال: 2005
ISSN: 0962-8452,1471-2954
DOI: 10.1098/rspb.2005.3144