1. Locate feeders and birdbaths within 1-2 feet of them so they can't gather enough speed to cause significant injury or about 20-30 feet from windows so birds have time to change direction. Window feeders also alert birds to a window.
2. Window screens will reduce injury even if a bird flies into it. Use them where practical.
3. Decals like Window Alert placed on the outside of windows have had the most positive feedback from customers. Each decal contains a component which brilliantly reflects ultraviolet sunlight. This ultraviolet light is invisible to humans, but glows like a stoplight for birds.
If you do have a window strike and the bird is injured CALL FOR ADVICE! The best course may be no interference. For a list of licensed rehabilitators click HERE. Or visit the Michigan Department of Natural Resources at: http://www.michigandnr.com/dlr/