Last night I counted my batch of three month old chicks..and three were missing!! I counted them twice this morning, and was still off three! It's driving me nuts because their pen can't be anymore secure-one side is my hen house, the other three are made out of chain link fencing and we've made a lean to of tin on one side to give them shelter. The bottom is mostly surround by wood and rocks, and I see no signs of digging. The top is covered with snow fence so hawks can't get in. I haven't seen signs of blood, feathers etc and it seems like if a rat, weasel, or snake got in I would see something like feathers or blood. Is it possible that it's a human predator?? Thanks for any help-this is really concerning me!!