These are much less robust than Platystoechotes. They're commonly encounter at restrooms in the Sierra Nevadas, where they're attracted to the lights.

Polystoechotes used to be widespread in North America, but is now only found in the west. Even in California populations in the Bay Area have disappeared. Its thought that their affinity for bright lights draws them out of their habitat. Ubanization seems to have had a significant impact, even when adjacent habitat is still available.