Late after sky

Taken on way back from taking photos and a video of the single swan and the two signets. We are a bit concerned as they’ve not moved from the field for several days. So I contacted the local Swan Rescue and having seen the photos/video decided that they were ok. We suspect that he/she is awaiting the return of his/her partner who we think was the injured one which unfortunately had to be euthanised by the vet. A sad situation.