My 2 year old mille fleur hen seems to be losing her vision. She pecks to the side of her food and does not do a good job at eating. It almost seems like cortical visual impairment (I work with VI students) from a possible head injury which occurred about a year ago. It all started when she flew out of the coop and (possibly) hit her head and definitely injured a leg. Thing is, whatever it is just started showing up as a visual problem in the last month and has quickly progressed. She spends much of the day eating dry food but seems to miss most of it and her crop is not full. Hand feeding is difficult since she misses it, and gives up in frustration. She is not completely blind. She doesn't seem to have good depth perception, can't navigate steps and ends up flapping her wings at the last minute to avoid falling. Has anyone else experienced such a thing?