Geese are afraid of you because you constitute a threat to them. Even though they have learned that you might be a source of food, they are not tamed in any way. The hissing sound is threatening display of their own, designed to intimidate you, in case you might be dangerous. read more
geese hiss to stay safe. When geese hiss you should back away. They may have eggs and are trying to protect them. mostly its the males that hiss but females are capable nonetheless. read more