Four out of our 8 hens started laying a few weeks ago, but one seems a little confused. While she is walking around, she just squats and drops an egg out. The eggs are never fully formed and are soft, they have a little tail on them, almost like two eggs. We broken them open and they have two yoaks. A lot of the times we find that while on the purch at night she will drop them. Do you think she ever get it right and go into a nest box? Is she maybe lacking something? We though maybe calicum, but they other girls egg shells are real had and think. So we're not sure whats up.