Now, with the wind behind him, he enjoyed feeling the stiffness ease out of his joints as he walked. He should join a gym, play sport. Lose some of the weight round his belly and the girls at work might take him more seriously. He always felt better when he came into Fair Isle, took a bit of exercise, ate healthy food.

Where the road split south near the school he chose the lower westerly path with Malcolm’s Head to his right. It seemed a little more sheltered there or maybe the wind was dropping slightly. In the field below Midway, there was a flock of redwings, new in. As he passed they rose into the air, calling. The sight of the birds lifted his spirits again. They’d reached the island within the last twenty-four hours; no reason why something rarer shouldn’t be with them. He started to run through the possibilities in his mind. More daydreams.

The sea out from the south harbour was still dramatic, huge rolling waves and white breakers against the grey rocks. The sun came from behind a cloud, lit up a rainbow of spray, then everything was dark again. He walked past the small graveyard, which was so close to the sea that spindrift blew across it, tucked himself behind one of the boulders to catch his breath and keep his telescope out of the wind and the salt. A squall of rain pitted the water a little way out to sea, and he raised his binoculars to look at the storm, then focused again so he was looking closer to the shore.

There was a swan near to the beach where the water was calmer. It was back on and its neck was tucked beneath one wing, so he couldn’t see the head. He thought it would be a whooper; it was big and mute swans were hardly known on the Isle. Then the bird extended the neck as if it were preparing to fly. The beak was black. It took a moment for the detail to register and Dougie set up his telescope, fumbling with the tripod mechanism. God, why had nobody in the world invented a decent tripod? He needed to check this out. Perhaps a piece of weed had become tangled around the bill. Best to limit expectations. He’d been disappointed so many times before. But through the scope the beak was still black.

The huge bird flapped its wings slowly and raised its chest. It seemed to be running over the surface of the water, then it sailed slowly into the air. On one leg there was a thick metal ring. There would be numbers on it. Dougie was muttering a kind of prayer under his breath: Please don’t disappear. Nobody will believe this. I need someone else to see it too.

Dougie jumped to his feet and followed the swan north through his binoculars. It was flying strongly enough but not too high. With any luck it would land on one of the pools at the far end of the island. Whooper swans often settled on Golden Water. God, he thought, what would Angela have made of this? She’d have loved to put trumpeter swan on the British list.