I love geese, but they can pose a threat to people who are a bit scared of them, (ladies and children) . Mine scare visitors with their agressive stance, but it's mostly bluster. they do process a lot of grass, in one end out the other. i have had 3 killed by badger?fox?neighbours dog? so I lock them behind steel mesh at night. The best thing my geese have done lately is frighten my neighbour into not taking liberties and overgrazing my land with her ponies against my will. they sense fear and really go for her. I have had to feed them through the winter, shortly they will be self sufficient.