PhiladelphiaPhlock,
You're question was really timed right. I came home from work tonight, got supper started and left my husband to finish it then went out at the usual time to do chores and found my youngest Serama hen puffed up, setting in a nest box making some weird, uncomfortable sounds. Her feathers were fluffed up all over, she looked like a frizzled and she's not.
I instinctively picked her up and talked soothingly to her and turned to look at her behind and sure enough, it was poking out a little but would go back in, then out a little. I held her with a hand between the legs, supporting her like I would normally do and I think it was the pressure of her body weight on my hand but it shot out and landed on the floor. Wow, close call. She has been laying about 1100 in the morning, I hate to think of her feeling bad that long but not much I could have done. Sometimes I go out and look them all over before coming back inside to get dinner going. I will be making rounds as soon as I get home from now on. It just takes a few minutes.
I was trying to remember what I'd read about what to do but it was resolved before I could do anything. I've never had this happen before so I'm still breathing a sigh of relief. Her name is CeeCee and she is doing just fine now. I had given them a little oyster shell in addition to the laying crumbles. I'm wondering if that could have contributed? The crumbles are a complete feed so I may still add greens and vitamins, but I don't think I'll be giving her any extra calcium again.