The work hasn't gone unnoticed. This owl used to visit Fern here nightly.
Last week I noticed some owl droppings and so I waited up one night to see who was visiting - I was delighted to see it was Fern's old girlfriend. I hadn't seen her since the spring.
She seems to have made the old haunt her home and so I've been putting mice out on the beams for her.
Trouble is now I'll feel guilty putting the new windows in!!!!