"The bird's remains were discovered at Baths Island on Sunday afternoon. It is believed it was killed at some point over the weekend.
Wendy Hermon, of Swan Lifeline, the charity that removed the carcass, said: "It was the remains of what looked like a swan that had been cooked."
She added that it was a "horrific" sight and said the carcass had been "stripped of the meat".
Since the 12th century the Monarchy (only) have been entitled to kill and cook Swans, which were a major food source. Nowadays such rights for the Monarchy are severely restricted to a few tributaties of the Thames, and fewer stretches of the Thames "proper".
What I dont understand is the recent squeamishness about eating Swan - a very low fat, yet high protein food source.... Swanneries were commonplace in Mediaeval times, so why no Swan Burgers in Tesco's??