The last two days my 1 year old Golden Laced Cochin has spent the entire afternoon and on into the evening setting on the nest. We've just assumed that she was laying an egg, but after hours on the nest today there was still no egg. This morning there was an egg, but I assumed it was from our wonky layer who frequently lays thin-shelled or otherwise sub-standard eggs (also a GLC, so their eggs can be hard to tell apart). The egg this morning was almost round and had white crusty splotches (calcium deposits?) all over it. Anyway, how do I tell if she's having a hard time laying or if she's going broody? Can she go broody if she's not sitting on any eggs?