I had found that fox by luck on the ski slopes a few days before. As I was coming down the mountain, I thought I would stop in the same spot to check if by luck she was still around. She was and this time with 3 subadult pups. I just had time to take 3 shots before the whole family scampered off.
Sigma 150-500 with OS on
La Bresse ski slopes, Vosges mountains, France