7 pullets, 6 of them about 23 weeks old. 5 have red crops and wattles and squat. (2 RIR, 1 Barred Rock, 1 Barnevelder, 1 EE) We've been getting 1-3 eggs/day of various sizes lately. I understand that it can take the girls time to get the workings in order, but we've been getting an occasional shell less egg. This morning we had 2 together just outside of the nest boxes. They're being fed a mix of layer feed with flock raiser to keep the protein up while the other 2 girls mature. They have free access to oyster shell. When possible they're allowed free range of the backyard, otherwise kept in 12'x12' pen. Just concerned that there may be something wrong. Do we just keep waiting it out or change something?