I have a 3 yr old Black Sex Link hen named Coallette. Usually she is very spunky, tame, and loves food. However, over the past few days I have noticed her not being herself. She seems very tired and lethargic, like she has no energy. She hasn't been talking or making noise like usual, and she hasn't laid in a while either. She is usually my best layer. This could be unrelated but she also has a really messy bottom. I have also noticed her sitting down in the middle of the day frequently. It seems like she is eating but isn't as enthusiastic about treats. This morning, I was out spending time with my hens and I saw her doing something really strange. She was just standing in the grass with her butt down, like how they poop, not doing anything. Her vent was pulsing but I think that's normal. She seemed uncomfortable. She stayed like that for a long time. She eventually moved but her butt was still partly down. I was able to get some pictures. Any info and opinions would be great. I want what is best for my girl.