You can put used screen to use as row cover to protect your seedlings from birds.
The birds like to bite the tips off of my nice, tender, young sugar pea plants. I have tried a plastic owl and CDs on strings, all to no avail.
I stopped by the local hardware store, and a clerk gave me two pieces of old metal screening from doors that had been re-screened. I draped the screening over the chicken wire protecting the pea shoots, and the screens are working well. Because the pieces are so large, I can cover two rows of peas with just one piece of screening.