Using CDs in the garden

The local birds have gourmet tastes, and they love my mesclun lettuce. Here's a shot of some their work in my garden. My solution was to try this old CD trick. I dangle a CD on a string so that it rotates freely in the wind, reflecting sunlight all around. Not the most aesthetically pleasing solution but it seems to work for now. I plan to eat the lettuce soon to make room for tomatoes.