Very satisfying Kestrels

We put a box on a telegraph post on one of our farms a couple of years ago and last year it was taken up by what we suspect was a young pair of Kestrels--probably having their first breeding attempt. They were successful but produced only two eggs then fledging two chicks.
We suspect the same pair occupied the same box this year and on a preliminary inspection we were delighted to find a much more usual brood of 4 nestlings not long hatched.
I must admit it was with some trepidation that we visited the box this week hoping to ring the chicks. Trepidation because the previous couple of weeks had been consistently foul weather with lots of rain and below average temperatures. I wondered if the parents had been able to find sufficient food to help keep the chicks growing--while still being able to keep them warm.
I was delighted on reaching the top of the ladder to be faced with four very feisty chicks adopting their usual aggressive posture with talons whipping out to slash the unwary fingers. The chicks were well developed as you can see in the picture, and I fully expect all the chicks to continue developing well to fledging--especially now that the weather has picked up significantly.
It will be great to see if any of these chicks become paired and set up home in some of the other boxes we've put up on the farm.