In the second half of the summer birds of the defenders of the orchards and gardens of our loyal friends turn into worst pests, causing considerable damage to crops of fruits and berries. The most simple device to scare away the winged tooth is considered to be… the mirror. You only need to get it to rotate — this flash sunbeams cause the birds to leave free “dining room”.
The most simple device for scaring away birds you can make from old laser-disc — need only heat it over the stove, bend it edge so that in profile, the disk took the form of the letter “3”. Make a dozen of these mirror fans, hang them on thin nylon threads to the branches of protected trees, and even a light breeze will easily untwist them, and reflected mirror surfaces the sunbeams will be an insurmountable obstacle for intruders.