Swifts are mad birds
They never sleep
But can close down half their brain for a snooze

Swifts are mad birds
They fly at 60 miles per hour
And throw themselves at
Walls and tiny holes

Swifts are mad birds
Building nests of spit and insect legs

Swifts are mad birds
As soon as they can fly
Having never ever flown
Take off and immediately head for Africa

Swifts are mad birds
Because they fly 5000 miles to spend a Northern Irish summer

But – humans are even madder
Who eat swift spit, mud and insect carcass

And call it birds nest soup

– David A. Thompson