Liberally translated here as three birds hiding in the organ; all 4' flutes of the manuals, starting with the one closest (RP); each repeat of the composition has therefore been played 3x, instead of the usual 2x.
I discovered this piece by accident while looking for something else and liked it so much as a demo of the three4' flutes, so here we go...
The cuckoo at the end is my own doing...
Theo Meurs is a Dutch organist/composer.
As I am still sick, so I kept it short, with my excuses for any mistakes.