Friday, 24 June 2016

ethology - Why social animals attack odd members of their own group?


Some social animals are known for attacking odd members of their own group, for example, chicken:



If you have a large group of one type of chicken, they will usually gang up on the one or two others that do not look like they do. They recognize color differences the most and will beat up on the odd chickens in a group.



Of course the same behavior is most commonly observed in humans, where any difference can be a reason for aggressiveness.


Why this behavior developed and still exists and how it is called?




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