In general baby chickens will not fight each other this is depending on how old they are but I would bet that no fighting will take place some pecking and pulling may come about but remember there is a "pecking order." .... this is prinsesrau's answer... i don't think any harm would be on each other for the chicks( they might be roosters wich is not very abnormal) i have 13 chicks and they peck but again no harm done