Ian Bromwich reported on 24 May:
After a long gap, large numbers of swifts were crossing France a few days ago.
I now have a pair back in box 3, one arriving two days ago and the other yesterday.
The first pair are now sitting on two eggs laid on 16 and 18 May, so should hatch around 9 June.
The new pair are 20 days behind that.
There have been four swifts flying over The Green for a few days now, along with one sitting on eggs.