When there is little grass available, such as during winter or in the more arid margins of their native habitat, they have been observed eating shrubs, herbs, and even Oxytropis roots, dug from the ground.
It is a region of European dry heaths and there are many species of alpine and marsh plants on the mountain such as the rare yellow oxytropis (Oxytropis campestris), mountain avens (Dryas octopetala), rock speedwell (Veronica fruticans), rock sedge (Carex rupestris) and green spleenwort (Asplenium viride).