This is a simple idea to scare birds out of your garden. I have this set up on top of my grape arbor.
Dig through your drawer and pull out all the CD's that no longer serve anything, like those many aol startup cd's
Drill a small hole in the cd and insert an un bent paperclip as a hanger.
Hang cd on a line where it can reflect the sun and scare the birds.
Step 1: Some Cd's Are More Effective in Scaring Off Birds
This cd is quite effective in scaring the birds