The following brief video demonstration from a community creator showcases these mechanics:
Certain modes allow for "observational" roleplay where the creature stalks from a distance without immediate attacking. 👤 About the Creator: BendytheDemon18 Siren head addon V4 -RP- by BendytheDemon18
No siren sounds. Fix: Check your Minecraft sound settings. Turn up “Ambient/Environment” volume. Also, ensure no other addon is overriding the sound.json file. The following brief video demonstration from a community
If you hear a faint air-raid siren or static radio white noise, stop moving immediately. Look at the tree line to see if any "trees" are moving. Siren head addon V4 -RP- by BendytheDemon18