Hello, I am very worried about my chicken. She has been very lethargic and slow for a few days now. I've done a general check to see if it's a crop(?) problem and her crop(?) isn't hard but she also doesn't through up(?) as such. She hasn't been eating much and she's just been sitting/lying down all day, with her eyes closed the majority of the time. Usually if I walk up to her she would make an attempt to make it hard for me to pick her up and what not. But today she let me check her legs, wings, throat etcetera without a problem. She is nearing 3 years old and she hasn't been laying much for the past maybe 6 months. She is a Sussex chicken. She weighs less than a kilogram roughly (my scales won't pick up less than a kilogram but I compared her to a kilogram plate). Any ideas if she is ill, it's old age or anything? Any help is much appreciated, thank you. She has literally just stood up and eaten a small amount of dried mealworms and this is her temporary accommodation.