Recently I installed Camera 3, a miniature camera which is positioned much closer to the corner of the nesting tray. This has proved useful already as we had a visit from Christopher Robin.
"CR" is clearly visible on his leg.
As you can see at the end of this clip, he was followed onto the nesting tray by the female Bella. CR didn't hang around though, as you can see from camera 1 (complete with audio).
Let's hope they haven't left it too late in the season to breed again.
Christopher Robin (aka CR) fledged from Christchurch Cheltenham in 2010 and has been a regular visitor to the Abbey tower over the last few years. Bella is unringed.