Swifts going? - NOT amateur radio

In May they arrive and for a few months the swifts are screaming in the skies above us. Then, you realise they are there no longer. I think they start to move this month.

I am sure there are swifts still around but there are fewer than a few weeks ago. Just weeks ago there were more than 20 overhead. Let us hope I see their return in the spring. To me, the screaming swifts are the making of an English spring and summer.

This year there were fewer swallows and house martins, but I saw plenty of swifts.

See http://www.rspb.org.uk/discoverandenjoynature/discoverandlearn/birdguide/name/s/swift/  .