The carrying of the "big gun" 500mm lens around for a few days, complete with tripod, finally paid off. It allowed me to stay at a safe distance from the ibexes and catch them undisturbed.
On the third attempt to find some of the large mammals that inhabit these mountains, I was finally successful. I met with a herd of ibexes close to the summit of the Plattjen, at 2'570m. Pictured above is a young male, which was observing the rocks it had just dislodged and that were rolling off the crest it was walking along.