Hello, I have 6 red sex links. They are 21 weeks old. We found our first soft-shell egg 10 days ago. We found our first hard-shell egg 8 days ago. It has been 8 more days. Since then, we've got about 5 total eggs. They have all been in the same nest box and quite small. What's up? I assume that one hen is laying these eggs. When will the other hens start laying? When will the eggs get bigger?