Young Banshees can hear voices in their heads. Often this leads them, subconsciously, to murder scenes. They sometimes write or draw messages from the voices subconsciously.
Adulthood Banshee wailing is a reflex they cannot be controlled - it happens in their subconscious mind. To find out who a banshee wailed for it must drink pureed liver, which contains iron, and helps the banshee summon the voice of the ancient mourners.
During this phase, the banshee's eyes turn completely white and the voice turns raspy. They reveal the name of the person who will die and at what time. Afterwards, the banshee reverts back to their old persona and throw up what they drank as they are allergic to iron.
