Pick up litter and refrain from littering. Trash near roadways (even organic things) creates an artificial ecosystem,attracting the prey of many raptors. This increases the chances of a raptor being hit by a car.
Place bird silhouettes in your windows to prevent small hawks, falcons and owls from colliding with them at high speeds.
Leave dead snags and old trees on your property for perching and nesting.
Install kestrel boxes in open habitats on your property in the spring to attract nesting kestrels.