2235h
There are two birds on the front box edge right now. Checked the recorder and one of them made me a wee bit suspicious. So went through the recorder and one is McDermot, his antennae is easy to see even in the dark. He has been around since 2014h napping upright and lying down in his favourite spot next to the nestbox before moving to the box edge. The second bird turned up on the ledge beside the box and was noticeably larger, and yes, before anyone asks, it is Jubilee. She landed on the ledge sometime around 2130h then hopped into the nestbox and I could see her tape. She spent some time nibbling on something before she joined McDermot on the box edge.
So today, we have had all the kids turning up and hanging out on the ledge/box for extended periods of time - first Fleet and Hart, then McDermot joined by Jubilee.