I just had to rpint this out and.....
give it to a woman I work with. She hooted....she had been telling us last year that her car and home windows were a total mess, from robins hanging around, flying into the windows, perching on her car mirrors and pecking at them incessantly, and doing their dirty thing all over both house and auto.
She tried tying the plastic bags that grocery stores use all over her car and around house windows, but that only lasted so long.
She siad that they have returned again this year. She's at her wit's end. So I will pass along any wisdom that you folks can provide.