I wondered if the birds would adapt to the CDs hanging from the branches of the Jamaican Cherry tree....they have, and I am getting 6-8 berries daily all of a sudden. A house is being built at the end of my block so I am pulling out of the construction dumpster the strong SHINY silver mylar sheathing from discarded AC conduits and just now hung the first one....about 6 feet long and a foot wide. Next I'll bring home the ones on the large diameter conduits and hang those too.