It's time to get out surveying your Swifts. I went to one of my local sites on Pontypridd on Thursday. There were 20 or so Swifts screaming overhead. I located one house where at least four (possibly 5) birds were entering holes under the eaves.
I notice that SEWBREC and the other Welsh Record Centres are holding an event on June 10th, to celebrate the tenth anniversary of their formation. They have highlighted several species that they wish to record and the Swift is one of them.