I have a flock of 5 birds. Last week, one of them started laying. I got 4 hard eggs for four days in a row. The next two days, the eggs I got were soft-shelled/rubbery. (I do supplement their feed with oyster shell.) For three days now, I haven't gotten any eggs at all. Is this normal for a bird that has just started laying? Is it possible that the chicken is now laying somewhere else (they are free range)? Or could it be that one of them is eating the eggs (especially since the shells started getting soft)? Any ideas? Thanks!