Roosters have spurs on the sides of their legs and they are said to be 'spurring' when they are attacking with their spurs.
'Sparring' on the other hand is like saying 'fighting'.
Roosters are truely creatures of their own. Some will have a problem with their owners and must declare dominance while others will almost co-work with humans to run their flock and befriend flock-owners.
'Normally' isn't a good word to express how often they will attack. It could happen, and it has for me in the past, but sometimes the boys will only be watchful and stay away from people. Just make sure your boys know their place in line if need be.
