Mauled by a fox?

A swan at the local lakes appeared to have had a worse night than me. I didn't sleep well, hence the early visit to the lakes, but the swan appeared to have been mauled by something - at first I assumed a dog off the lead, but given the feathers and blood everywhere behind a fence & away from public access, I can only assume it was a fox, or there is a remote chance of a mink.

RSPCA were called and it has been taken to a swan sanctuary for some treatment and rehab. much to the annoyance of it's mate. I hope they are reunited soon.