Do you think a chicken can have a propensity for sour crop? I ask because, out of my flock of 11, one chicken has had it twice now, while none of the others has had it at all. My black australorp named "Mother Plucker" (she had a feather plucking issue when she was a chick and reigned feather-plucking terror on the rest of the flock for several weeks) got sour crop a few months ago, and we thought it was because we were dumping lawn clippings into the run for them. We no longer give them anything like that, and they are fed almost exclusively layer pellets, BOSS and scratch (as a treat) and the occasional table scraps. Yet Mother Plucker has come down with the sour crop again. I'm thinking she might be the first to meet the dinner table. Should I give up hope that she will be a productive hen and cut my losses, or is this just a bad few months for Mother?