Crash investigators are at the scene and Dumfries and Galloway Police estimate that the road will remain closed until after midday while they attempt to determine exactly what caused the collision.
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The population of the bird in the south of Scotland has fallen dramatically in the past decade, due to overgrazing and habitat loss.
Vigils have been held in the region to mark the 100th anniversary of the battle of the Somme.
Vigils will take place across the region tonight to remember those who fought in the Battle of the Somme 100 years ago.