The snow partridge

A rare bird makes its home at these altitudes. It is the snow partridge or rock ptarmigan.
A grey-brown bird in the summer months that puts on its white coat to go unnoticed in winter and also grows hair between its legs to prevent it from sinking into the snow.
Sometimes surprised by a walker, it takes flight under your steps. If you don't see it, you may hear it: a low scraping sound characterises its song.