In fact there were fifteen swans on the lochan. The trouble with this lochan is that it's some distance from the nearest road, the Sanna road, across a bog liberally dissected by deep, water-filled ditches. We walked around the lochan back in December - post here - and it was one of the muddiest walks we've ever done.
here - and the Raptor has seen them swimming on Loch Sunart. These swans winter in the UK, though not here, and then fly north to their summer breeding grounds in Iceland, and northern Scandinavia and Russia.
Many thanks to Hughie for the phone call.