Bird lovers enjoy having all types of species in their yard, but not all birds are welcomed guests. Invasive species like House Sparrows and European Starlings are not native to the United States and can bully other species out of viable nesting spots and swarm bird feeders. With the two-compartment sparrow trap from Songbird Essentials, you can humanely control sparrow and starling populations in your yard: All you have to do is place the trap in a prime location and set it. A trigger quickly closes the lid when birds are inside. Help give Purple Martins and Bluebirds freedom to nest on your property with this trap from Songbird Essentials: Features: Figure 8-shaped trigger that quickly closes the lids. Rust-proof construction.