The Hazel grouse is a rare galliform in Vanoise. This species is particularly fond of the mixed forests of Peisey-Nancroix on the mountain zone. It keeps a very low profile, including from a vocal point of view, the male emitting small high-pitched whistles. The hazel grouse is sedentary. To overcome the harshness of the winter climate and avoid the cold, it sinks into the snow just like the Rock Ptarmigan or the Black-tailed Grouse.