Great news This morning checked the camera to find 2 swifts in the bedroom nest. Last year it was 2 weeks before the second one arrived. Looking out there were 8 swifts flying together with our 2 still in the nest. Later there was a couple of screaming fly pasts of 5 birds. This is much more usual for here so I suspect the others were just flying by.

Short clip showing the 2 of them together on the nest.

Its amazing that they have probably not seen each other since last year yet they return to the same nest within 2 days of each other after a winter in S Africa.