Sung by me to my children, now 8 and 5, and to me by my Irish-Hungarian mother circa 1971 and to her by her Hungarian mother circa 1950:

My pigeon house is open wide
And I set all my pigeons free
They fly away to every side
And they light on the tallest tree
And when they return from their daily flight
I close the door and I say good night
Cooaroo Cooaroo Cooaroo Cooaroo
Cooaroo Cooaroo good night