Last week I had a healthy 1 year old BCM hen die. She was with my other 3 birds in the morning (9 am) grazing happily and by 10 a.m she was dead. They are all very healthy (were) the get along pretty well, fresh food and water many times daily they have a enclosed roost and a separate laying box, I clean the coop regularly. They have not laid in 2 weeks and are loosing feathers (slowly) before this started I would get 4-5 eggs a day out of 4 chickens. I thought they were molting due to the slow loss of feathers neck and breast, and tail feathers mostly; but with the death of a bird I am concerned its more. Can someone please cle me in, I don't want to loose any more of my birds. Thank you