My Gold Cuckoo Marans hen is 30 weeks old and still not laying any eggs. She spent a half hour in the egg box today - and she does this regularly. But no eggs. Is this normal? Her sister hens (same age, different breeds) have been laying for weeks now. Today she looks droopy-eyed and her poo is just liquid. Her abdomen seems huge but soft. What is going on with my girl? Is she just be a big chicken who is laying late? She's still eating, still hangs with her sister hens. I'm worried about her. Any guidance would be much appreciated.