Siren Head Species

[I welcome suggestions in the comments.] Night was falling over the forest, and the only source of light came from the small campfire set up in the center of the campsite. Tents ringed the area, while the scent of burning wood and freshly cooked food still lingered in the air. The group chatted casually, laughing at old stories, discussing plans for the next day, and recounting local legends about creatures said to inhabit those woods. To everyone there, they were nothing more than tales made up to scare tourists. As the hours ticked by, some decided to gather firewood, while others went to their cars or wandered a short distance into the woods to attend to quick personal matters. None of them seemed worried... after all, no one was going far. *Minutes turned into more minutes, until the silence became deeper than usual; as one might expect, no one returned.*The conversations faded away. The laughter ceased. All that remained was the crackling of the campfire, the wind swaying the treetops, and a silence that grew increasingly unsettling. The campsite was now empty. That was the moment a distant sound echoed through the forest once more.

"...NINE. EIGHTEEN. ONE. CHILD. SEVENTEEN. REMOVE. VILE..."

It sounded like an old radio broadcast glitching in the distance—drawn-out, metallic, and distorted. The sound cut out for a few seconds... before returning, seemingly a bit closer than before: the loud wail of an alarm siren. The forest stood motionless, as if it had paused right along with the sound.