Now, this looks like we have a new bird in Box1. I'm pretty sure this isn't Chloe or Chris. Its head is quite streaky and there is a dark fluffy bit on each side of its body.
Another view of the newcomer. I don't think there were any more visits by this bird today.
Friday 14th February, 2020
Another milestone - first nesting wriggle of the season - and it's in Box1, so it must be Chloe!
Just a simple swap-over in Box2.
And another nesting wriggle in Box1!