Gone? - NOT amateur radio

As the weather was hot in the east of the UK yesterday, we spent some time in the garden in the late afternoon. What was different?

In May, June and July the screaming sound of swifts feeding on the wing was very common. Yesterday was different. In nearly an hour I saw just 1 swift.

The impression is that younger swifts hav seen overheade already started their migration back to central Africa. Normally most adult birds leave by mid-August spending just a few months here to return next April/May.

They are ephemeral birds: when they are with us they are very common - usually the screaming is heard first - then they are gone again and the skies are quiet. On better evenings 20 plus birds can be seen overhead.

To me, they are symbols of a UK summer and I miss them when they go and eagerly look forward to their return next spring.

UPDATE 0840z:  6 swifts seen overhead this morning.