We have a single swift that seems to have been left behind as all others have gone - migrated to Africa, we live in Gibraltar and every year they return in their hundreds. They nest on our balcony but this year a sole swift seems alone. It just keeps flying back and forth to the nest looking for the others. We have lived here 4 years and this is the first time we have observed this, most have gone by week 3 August. Nothing much we can do I know, but any insight would be helpful.
Chris
Chris
