She laid an egg yesterday and only today seemed off. She's usually really feisty but she's just been sitting in her coop all day. I gave the hens some leftover burger earlier yesterday. Wondering if she might have swallowed too big a bite and it's causing sour crop. I tried massaging her crop and she several times opened and closed her mouth like she was burping. No foul smell. I tried holding her upside down and massaging hr crop and she did dribble out a little clear fluid, but again no bad smell and no vomit. I put ACV in their water, and will possibly mix some olive oil in with their feed tomorrow morning just to help grease things along. She isn't egg bound. I checked that too. She has no visible parasites anywhere. She's on organic layer pellets. Thanks for any suggestions!