Blindness in a hen

[pssejv23]

I have a 1 year old hen. for the last week she has been very sleepy. Her eyes always seem to be closed. she bumps into things when she walks she still eats and drinks but is very lethargic - almost weak. I think she is blind and may be sick.

 

[MotherJean]

Research Marek's Disease. If it was my bird, I would euthanize.