* They want more food: Geese are known for being greedy, and a hiss can be their way of demanding more treats. They might be trying to tell you that their bowl is empty, or that they want a different kind of food.
* They feel threatened: Geese can be territorial, especially when they are protecting their young. Even if you're offering food, they might interpret your presence as a threat, especially if you're getting too close to their nest or young.
* They're warning you: Hissing is a common way for geese to communicate with each other. They might be hissing to warn you to stay away from their area, or to let you know that they are unhappy with something you're doing.
Here are some things to keep in mind:
* Keep a safe distance: Even if you're feeding them, avoid getting too close to geese. Respect their space and allow them to come to you if they want.
* Be mindful of their body language: Besides hissing, other signs of aggression in geese include stretching their necks, flapping their wings, and making loud honking sounds. If you see these signs, it's best to move away slowly.
* Don't feed them human food: This can be harmful to geese and cause them to become dependent on humans. Stick to bird seed or other commercially available goose feed.
In short, a hissing goose is trying to communicate something. Understanding their body language and respecting their space will help you avoid any unwanted confrontations.