This rhyme leads to superstition when seeing these black birds of destiny.

One for sorrow,
Two for mirth,
Three for a funeral
And four for birth.
Five for silver,
Six for gold,
Seven for a secret,
Never to be told.
Eight for a wish,
Nine for a kiss,
Ten for a bird,
You must not miss
Eleven is worse
Twelve for a dastardly curse.