Matilda has now fledged the nest!
The moment of departure on Tuesday 25th was missed by the main camera which is at the wrong angle, however the other camera did manage to capture it.
This was no accidental departure, indeed it was a purposeful and strong flight and from what I can tell, she was more successful than Paddington was last year who needed rescuing!
By the squawking I heard last night, I think she is somewhere on the Abbey where her parents will bring her food while they teach her how to hunt on her own.
From now on, I suspect that she will be rarely seen by the camera, and I have now turned the WiFi link off as a result.