My 7 mo. old RIR/OP mix was acting very lethargic and did not want to eat at dinner time. She stayed close to me and upon checking her out, her bottom did not seem right so I gently massaged her belly... out towards her back side and after a couple minutes of doing this she wanted down, walked out of the yard dropped an egg minus the shell. She kept bearing down and I noticed something hanging out of her. after a few minutes I pulled it out and it was the shell. Is this normal, does it happen often and why what can I do to prevent this. I give them a cup of oyster shell once a month and once a week I give them about 2 cups of laying mash in their hanging feeder other wise they get scratch with salad greens spinach etc. Sorry if I am too wordy but I want to make sure I give all the info. May make you all feel like this after reading my winded posts. I do thank you all, been at this chicken thing since March 2011 but I am still sooooo confused but the computer confusing me more.