The Tirlière plateau is an ideal spot for observing avifauna of the open altitude environment. The song of larks, water pipits and black redstarts will accompany you on this walk. At a bend, you might see a magnificent common rock thrush or a kestrel in the "Holy Spirit" hovering position that makes it easy to identify. Tirière is also a reference site for tracking the chamois population in the Ecrins National Park.