When I was a child, I heard from my superstitious grandmother that swallows build nests with a prosperous population and a prosperous family. So, turtledoves will build nests.

Sparrows come and go, swallows fly; In this way, the curse for no reason will not come.

This is a biblical saying that this place is upright and there is no curse.

The second half of the sentence is uncertain, but there are small animals that are usually peaceful. Another Bible also explains this:

Song of Songs 2: 12 (CUNP- God)

Bloom on the ground, it's time for birds to sing; The voice of turtledove is also heard in our territory.