[Maine-birds] Kestrel pair back and nesting in Benton barn

There has been a nesting pair of Kestrels in my Benton barn for over 5 years.  I saw one about two weeks ago.  Now the pair is going in an out of a hole in the barn soffit.  This has been their summer home each year.  Yesterday the pair was sitting on top of a pole at the top of the barn like a pair of love birds rubbing into each other.  Other birds give them distance.