Cranes song is loud, clanging, and sound like a trumpet, this is why it is often called hejnal (traditional Polish tune). It is easier to hear a crane than to see it, as it can perfectly blend with the scenery of the environment it lives in.

Mating call of the male Great Bittern is unmistakable, deep fog-horn or bull-like boom. This is why Great bittern’s folk names include barrel-maker, bog-bull, bog hen, bog-trotter, and butterbump.