Today I found the female bird again; she has moved south towards Oakmere and has found a new mate to breed with. She is now sat incubating 5 eggs which will hopefully hatch successfully later in the year.
In the adjacent box, 300 yards away, I then discovered another male bird with a single owlet. The amazing thing is that this male bird is the son of the aforementioned female; fledging last year in nearby Sandiway.
Do they know that they are back so close to each other? A question that we cannot answer.