When my kids were young the swallows built a nest up on the wall of the balcony. Each year used to come and give birth to their babies, feed them and then were setting off the nearby marshes to find mosquitoes and other insects.
After two or three years I don't remember exactly another family of swallows built another nest next to the old one.
We were so happy to see them every year coming and leaving for warm places again.
Someday I noticed a hole in the second nest and I realised that anoth















