Kestrel box

We were taken by surprise this spring, when a pair of kestrels started prospecting for a nesting site around our property. They seemed to be selecting one of the high hayloft windows, so Rob decided to put up a nestbox in case they would prefer that.
We had nesting kestrels in our first years here, when they successfully used a nestbox, but not for twenty years or so. It would be great to see them succeed again so fingers crossed!