Why are my chickens pecking at each other?

There could be many reasons why your chickens are pecking each other. It could be a possible mite or lice infestation, stress behaviour if there is not enough room in the coop, hot weather or visible cuts or wounds.  It may also be because one of the chickens is bullying the others, trying to establish or disrupt the pecking order.  Regular health checks will ensure you know what is “normal” for your chickens and help you identify any changes quickly.  Additionally, observing your flock quietly will help you to identify any bullying behaviour.