Bittern on frozen ditch, taken from tractor

This kestrel was in attendance at a large fire site that i was burning with the aid of tractor and front-loader. It realised that when i was moving large some root stocks small rodents would run out. It took a couple of hours to catch its first field vole which it did by running along the ground and through some branches at lightning speed, the second vole it caught approx one meter distance from my feet and another by dashing under the moving tractor only to come out the other side with its prize!