Flycatcher / Grå fluesnapper

The last three or four years we have had a pair of grey flycatchers building their nest outside the window on the first floor in our cabin in Sweden. The first picture below is taken two weeks ago, the next two are from last saturday. I am impressed how they can find back to the same window in the middle of a forest miles away from where stay during the winter. Think they were happy when we left yesterday getting the whole house for themselves again.