Hanging ornamental plants are really attractive nesting sites for many types of birds. Unfortunately, a bird nest in a plant can lead to insect issues, an inability to water and problems with aggressive, defensive avian parents once the eggs have been laid. Stop birds from nesting in your hanging flower baskets with a few simple, inexpensive preventative steps.
Install some rubber snakes in the basket. You can coil the snakes beneath the flowers and leaves of the plants so that they are not visible to humans but will discourage birds from investigating the basket as a future home.
Place a few mothballs in the basket. The mothballs will not hurt the plants—though do not place more than four in any one basket—but their odor will discourage birds from invading the basket.
Build a bamboo barricade. Bamboo skewers with pieces of thread strung between them prevent birds from landing in your basket. If you use green or white thread, the structure should not detract from the visual appeal of your flowers.
Frighten birds away with Mylar tape. Shiny garden spinners are a popular alternative because they provide a more coherent look. Place strips of Mylar tape (or the spinners) on and around the hanging baskets during nesting season. Once the birds have built elsewhere, you can remove the tape.