[el ess A]

My bet is one of the little girls is feeding the gathering zombies along the fence line. The sneak peek for next week shows someone from the inside feeding a zombie a mouse through the fence. All you see is a flashlight, the mouse and the zombie eating it. That's my guess. This week's episode had a scene where some kids were "naming" zombies and refusing to believe they're actually dangerous and dead, plus Carol told Daryl about the zombies starting to mass up more than normal in certain spots, so I'm deducing the outcome here.