Love is in the air ........

......... well it certainly is for Swifts who mate on the wing.

I was watching these two Swifts who were flying into the wind and by Swift standards relatively slowly, they flew closer and closer in a synchronised pairing until, with fixed wings, they covered each other.

I can only conclude that they were mating.

I've read about it in the books, but never expected to witness the act.