The Rock Partridge lives in the mountains on well exposed slopes, like those here at Roche Méanne. Every two years, the Ecrins National Park rangers count how many there are on this slope. Before sunrise, they take position in their different « sections » with small tape recorders to imitate the song of these birds. « We listen attentively in case there is an answer ». The song indicates the presence of a « singing male ». « Sometimes we only hear their song, but other times, suddenly, the silence in the mountains is interrupted by the crashing of beating wings which makes us jump. We just have the time to count them and then we see them diving off at top speed ».