Hung in a garden, fruit tree or other area you want to keep free of avian visitors, these discs provide a visual deterrent. The colorful spot on the front mimics a predator’s eye, triggering an instinctive urge to flee, while the shiny background flashes with reflected sunlight, further startling birds. A fin on the back catches the lightest breeze to help keep the discs in motion and a swivel connector lets them turn freely.