Also, special feeders are available to screen out larger birds but allow the smaller, more desirable birds to feed. To discourage house finches, take the perches off your tube feeders. They can't cling very well and will be discouraged. To get rid of blackbirds and sparrows, stop offering cracked corn To discourage doves and sparrows, stop feeding bird mixes. To keep the starlings from taking over your suet feeder, try a bottom feed suet feeder.
Birds see the sky and trees reflected in our windows and unwittingly fly toward the mirage.
Hang a few long, one inch strips of foil from the eaves. Hang strips of paper or colored ribbon, or even a mobile outside the window. Spray a thin coat of artificial snow on the window. Attach sheer nylon netting over the window. Try making your windows less transparent by shutting the blinds, changing the lighting inside or pulling the shade.