Ours must have left 2 or 3 days ago, suddenly realised they werent there, my poor babies, I hope they are strong enough for the journey, 2nd brood have hardly had time to learn anything. Im sure I once read they head south and stop for a while before the next leg, I hope so, only about a week out of the nest :-(. we had about 20 flying round, I think there must have been some in the field shelter as well.
Interesting there was a bird sleeping tucked into the polytunnel door, where the diagonal meets the top corner (polythene fell off so windbreak tacked to the inside of frame). this is the third night its been missing, I wonder if it was a swallow? didnt like to shine torch on it and disturb it in the dark.
so sad they've gone.