symbiotic sight

he is a creature that adapted with the orbs

has eyes of another species, orbs that symbiotically attach to his face.

the orbs are really more of a plant life in their natural habitat, only when he chances upon them and makes his call do the orbs become animal, they are potentiated into a symbiotic sight organ, but one whose animal nature is completely latent until activated with his song sign.

they latch onto his throat and emit a poison, the poison is lethal to most, to him, but surviving the intoxication stimulates an ether between the nerve nets. the rhyzomic root culture of the orb is electrically intertwined with the web of his sensory system. is imbibed though painful to him,
endurance of the suffering conceives a new raw sense, the orbs have evolved into the fleshy organ of another.

he roams about.

this happens on land, where the orbs are barely visible (from up high they are very obvious), they hover just out of reach of him and those like him, so most mugs don't bother even if they can see their phosphene glow, dim and shortlived like a suicide bomber firefly, they are many, especially in the city, and you can spot them if you stand very still and stare into the sky, just out of reach, but he climbed a pole about the width of a tree, just in reach of about three, seized his chance and ended up with two young ones, not damaged from the snatch.

they would last a while as his eyes, until fading out to die.