What Is That Balloon Doing In The Garden?

I noticed Peacocks were eating the green tomatoes , so I tried a high tech "scarecrow". So far it seems to be working .

 I bought this product online at  Johnnys seeds .com, its called "terror eyes balloon's" it claims to scare birds away from fruit tree's http://www.johnnyseeds.com/p-5440-terror-eyes-balloons-3-pack.aspx