I just heard about this early April Fool's Day fumble on the part of the BBC. As the Times of London reports: "Declan Curry, the intrepid television hack, broke the embargo on a fascinating British Waterways study that revealed that ducks living on canals weigh, on average, about a pound more than those living on rivers. The slow-moving canal water, so the story went, provides less opportunity for the ducks to swim and as a result they piled on the pounds. Mr Curry and the BBC should have taken note of the embargo date. April 1. The name of the academic quoted, Olaf Priol, is an anagram of April Fool." Unfortunately I can't find a link for this.