They've been a staple at Wrigley for a long time. Usually by now they're eating any leftover trash on the field and in the stands. I kind of remember being at a Cubs/Sox game a couple years ago... and it started drizzling and the seagulls swarmed and we all knew it was an omen... and I think it was Pierzusiufnjgnsjski's idiot ass hit a grand slam right after they started swarming... hate the seagulls.