There is a family of mute swans at my in-laws place in Tvedestrand, Norway, who come by at least once a day. They are two adults and three cygnets, and I have never seen them separated from each other. They came to the garden a little over an hour ago, but about 20 minutes ago, the mother and the cygnets left. The father is still laying on the grass here, relaxing. I’m just wondering if this is normal behaviour? Are swan pairs sometimes separated?