They make nests and burrows in tall grasses called tussocks. They can have many branches creating dense tufts, clumps or tussocks of plants. In areas of muskeg, tussocks form and may collect algae. It forms hard thick, tussocks or clumps of plants. Among the Red Alders are tussocks rich in herbs. Dense vegetation near creeks, thick grass tussocks, and caves are also used as dens. The third instar larvae hibernate in grass tussocks. It nests in tussocks or low in dense bushes. Common wombats are herbivorous, subsisting on grass, snow tussocks, and other plant materials. Pupation occurs low down deep within grass tussocks or dead leaves. On the mountains there is a rich alpine vegetation of shrubs, tussocks and herbs. Once they have arrived they nest on the ground amongst grass or heather tussocks. The lined nest is built amongst grass tussocks, and 4-11 eggs are laid. It emerges to hunt among grass tussocks for food. The South Georgia pipit also uses the tussocks for nesting.