Fall bird migration movements can begin as early as mid-June for individuals of some species. You can follow fall migration on Birdcast.info. You can sign up for eMail alerts when migration is predicted to be high in the Philadelphia area. BirdCast has often used August 1 as a proxy for the fall migration season’s beginning, because by this point in the year, numbers of birds are beginning to increase markedly in their radar data such that avian movements are now readily apparent above summer’s typically heavy insect and bat activity in many areas. Visit the Migration Dashboard to view migration patterns in your local county.
Each year, tens of million birds pass through the Philadelphia area during migration. Artificial lights can attract migrating birds to buildings and ultimately cause them to collide with windows and other parts of the buildings associated with the lights. Whether you are a building owner, tenant, business, or resident, you can join us in helping to prevent night-time bird collisions during the months many birds are migrating by turning your lights out at night (August 15 to November 15). Visit https://www.birdsafephilly.org/lights-out for more information.
