As long as they have secure housing to get into they should be fine. If you live where it gets very cold a nice layer of shaving for them to snuggle into at night and if they so choose to do in the day if weather turns bad. My geese have access to their house during the daytime in all season s but choose to stay outside even on coldest days. But never at night because of predators. I feed timothy hay and grains like Flock raiser and whole corn. They do have a way of changing from dinner to pets pretty easy. Housing needs good ventilation to keep humidity from rising with those warm bodies and also keeps ammonia from building up inside their house. and forgot to mention how nice heated buckets are on days below freezing. TSC carries them.
I do buy kale chopped and romaine lettuce for my geese and also hang heads of cabbage for them maybe a couple times a week. but they like soft grasses like timothy, I understand they don't care for alfalfa hay. They love the cabbage when hung up it's fun to watch them go at it.
