The red squirrel population around Britain's highest mountain may be expanding its territory, after evidence was found of activity higher up Glen Nevis than previously encountered.
John Muir Trust conservation officer Lewis Pate found a split hazelnut shell in Steall Gorge, a sign that a squirrel had been enjoying a meal.
He said: "The only animal that can do this is a red squirrel and while we have never observed any reds in the gorge, it is reasonable evidence of their presence."
It was higher up the woods of the glen than any red squirrel has yet been seen, although they have been regularly observed further down.
Those who like to go walking
in the area may hope to be the first to spot one of the animals in the gorge.
While red squirrels have been largely driven out of England by the greys, they still thrive in the Scottish Highlands.
Areas with significant populations include the Rothiemurchus Forest in the Cairngorms, where walkers and those using mountain bikes
may often encounter the bushy-tailed animals in the pine woods.