Eva was one of my very first chickens. She has brought me much joy. I have been through alot with this chicken. Soon after I got her, she bummed her leg and had to be put on medication for a month. A few months ago, she and Zoii had to be wormed. I noticed today she wasn't being her bossy self. She had green poo caked down her fluffy feathers and was acting sluggish. She seems tired. I offered some food to them and all the other chickens went nuts. She is usually first in line. She barely pecked at it. None of my chickens let me pick them up or cuddle with them, but Eva just kinda stood there while I picked her up and examined her. She wasn't pleased about me cleaning her backside but still didn't put up a fight. What do you think could be wrong with Eva? She is a two year old barred rock. The other three hens she lives with seem fine.