Reflective tape confuses the bravest of birds. Even a slight breeze will cause a fluttering sound as well as mirror-bright reflections. Scare Tape is most effective on flocking birds attacking young seedlings, fresh germinating seeds or ripening fruit (do not put the tape up before fruit begins to ripen). This reflective prismatic pattern film annoys all kinds of birds with its rainbow flash of colors as well as the fluttering sound.One roll of bird scare tape, both colors shown as color may vary between the two options.