When my father was young, his mother kept a pair of Chinese geese which terrorised the postie when he came down the lane to deliver the post. He used to have to shout for assistance and someone one would come to his rescue.
I've had problems with Silver Pheasant cocks in the past........they can be particularly aggressive in the breeding season.
As a keeper of gamefowl, I have to be careful as I have young children......... although the cocks are very eager to fight each other, it's the hens which are most dangerous when they've chicks at foot. They will have a go at anything which they perceive to be a threat to their chicks, and are prone to fly up into the face of child or adult who gets too close. Some of the cocks are 'man-fighters' all of the time, whilst others are only dangerous at breeding time........most are trustworthy and move away if faced up to.
In my experience, some of the utility breed cocks are more of a problem than game cocks.
I find that aggressive cocks respond well to being enthusiastically 'roughed up' (turned over and lightly shaken) in hand, then held down with one hand and 'pecked' with other, then left on the ground when you walk away. They seem to think they've had a doing from a rival, and seldom try again.