Tiny transmitters have been attached to migratory swans so their epic journey can be tracked for the first time.

One whooper swan and five Bewick's swans are being tracked by satellite so their progress can be followed online.

The researchers hope to reveal where the swans stop to rest and their exact flight path, along with many other trials the birds face on the journey.

The study is being carried out by the BBC and the Wildfowl and Wetland Trust, who hope it will aid conservation.

Full Story