"While the symptom of depression in chickens afflicted with Chicken Anemia Virus has been reported by many different owners, the pathology is not known. Considering what is known about the pathology of CAV, it is likely that this is not depression stemming from a chemical imbalance in the brain. It may be best described as the "chicken blues." Just as a human feels sad when he/she has been sick for a long time, chickens with CAV may be exhibiting complex signs of emotional sadness."
"A particularly interesting aspect of Chicken Anemia Virus is its symptom of depression. The presence of depression in non-human mammals is disputed, and hardly found in animals beyond mammals. However, CAV is consistently seen to incite behaviors indicative of depression. Lethargy, social isolation, loss of appetite, and mental dullness are the most highly reported symptoms [1, 3]. The onset of depression implies that CAV may have greater effects beyond bone marrow atrophy and immunosuppression- it is a neurological infection as well."
So sad ;( IF she has this its highly contagious and im screwed...