The geese free range during the day but sleep in the chicken coop at night to provide them with better protection from predators.
In fact we've already lost one goose. One of them escaped from their pen at night and made noise that attracted the attention of our weimariner. She's been doing a lot better during the day but the stimulation at night was too much and her instincts took over.
On the other hand the chicken flock has been expanded by four leghorn hens to bring the total number of chickens up to ten so it's not all bad news.