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 کاملPartner Choice in Raven (Corvus corax) Cooperation
Although social animals frequently make decisions about when or with whom to cooperate, little is known about the underlying mechanisms of partner choice. Most previous studies compared different dyads' performances, though did not allow an actual choice among partners. We tested eleven ravens, Corvus corax, in triads, giving them first the choice to cooperate with either a highly familiar or a...
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...
متن کاملRavens, Corvus corax, follow gaze direction of humans around obstacles.
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...
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ژورنال
عنوان ژورنال: Quarterly Journal of Speech
سال: 1921
ISSN: 0033-5630,1479-5779
DOI: 10.1080/00335632109379312