The migration routes and wintering grounds of Scottish Arctic Skuas have been revealed in a new study led by BTO Scotland.

Scientists fitted tracking devices to Arctic Skuas nesting on Fair Isle, Shetland, and Rousay, Orkney.

They found that the birds had surprisingly varied destinations outside the breeding season. Although Fair Isle and Rousay are only 90 km apart, birds from these islands wintered thousands of kilometres away from one another.