Hello Ivy,
thanks for your comment :-)
Well, swallows sing well, but the greater joy is to watch them fly. They are true artists, real acrobats of the air.
Of course they eat the mini monster but only the very small ones (small flies, mosquitoes, flying ants). So you wouldn't have to worry about your beautiful butterflies and dragonflies. After all, this is also the cycle of nature.
We are very lucky that the swallows have nested here, because their population is also declining with the decline of insects. And the little ones were sooo cute :-)
Greetings from Germany,
Chriddi