Hi,
Saw this at Disney World one year long ago in an eatting area.
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Circular holographic images flash dramatically in the sunlight as the 3/4" tape
vibrates in the wind. Holographic image creates moving reflection which
frightens and deters birds. Ideal for fruit trees, berry patches and
grapevines.

Highly effective in a wide variety of crop and garden applications.

Also can be used to keep ducks, geese and gulls off waterfront lawns and docks.


For best results, install tape just before crops ripen and feeding habits
develop. Elevate tape 3 ft over crops so birds can see it from all directions.
Run tape lengthwise and crosswise to form an elevated protective grid. Remove
tape when harvest is over to prevent birds from getting used to it.

google it