Hi, My American Leghorn isn't acting normal. She's usually very dominant, always eats first, gets out of their run whenever possible, and is just generally very feisty and flighty. For the last 4 days or so, she's very lethargic. She's eating, but not as much as usual. Her comb is very pale, a little yellowish and droopy. Her poo looks normal. She's walking fine. She's not trying to get out of the run anymore, and she let me pick her up the last two days to take a look at her (she usually runs away from me). She hasn't laid an egg in about 2 weeks, but she's about 4 years old, and she's been stressed lately, so I wasn't concerned about it. She doesn't care very much about treats (she just walks over and pecks at scratch listlessly), and she's all hunched up like she doesn't feel good. I felt her crop, but I'm not really sure what I'm looking for. It felt the same as my other two chickens' crops. They have access to grit and oyster shells. Any ideas? Should I separate her from the other hens? I need a Dr. House for my chicken!