I have 9 hens, no roosters. One of my girls consistently lays an egg with a paper thin shell or no shell at all. She has been laying for about 4 weeks now, she is about 23 weeks old. They all eat layer crumble, oyster shell grit mixed in, occasional treats of grapes or scrambled eggs with the shells. They always have fresh water and free range all day long. When I have experimented with crumbled up dry cat food, she seems to lay a somewhat normal egg. She is a fairly large RIR, gets plenty of exercise and looks very healthy. Roughly 3 hours before sunset she will start her penguin stance, sleep standing up, lay down with her tail feather bumped up. She seems miserable when this happens. Any suggestions are greatly appreciated.
