That's probably because you're one of only a very few who put out food. You don't have to have bird seeds. You can put out regular food or scraps. Anything with high fat content is the best thing to give them right now. You could smear some stale bread with peanut butter, crumble up some crackers into some peanut butter and roll it into little balls, fruit/veggies and/or peels. Pretty much anything, really.

Thanks for feeding the birdies!!!