The only thing geese are good for as far as protection goes is alerting owners to a problem, because they are so noisy when excited. They can't protect anything, including themselves, from attacks by larger predators like dogs, coyotes, bobcats, raccoons, owls, and many others. It doesn't matter how vicious they are against better equipped predators.Hi, someone here has suggested a guard animal. Was wondering whether you might encourage large Canada geese to come down and mix with them, possibly by providing a lake or pond of some sort, and planting mangolds such as turnips and swedes for them to root up, as well as other root crops, which they love, though maybe not potatoes. You might give them some grass pellets in the winter - I think that's what they eat if I remember. As I understand it, Canadas are so vicious even a fox won't have a go. They are therefore ideal 'guard dogs' for gentler geese that would otherwise become prey, so perhaps Canadas would work for your hens. A pity Canadas are now considered a pest, and often culled. Maybe people haven't yet realised their useful side!