Ok, I've had poultry and waterfowl my whole life, but this one has me stumped, I've never had a problem like this. An extended family member hatched about 50 Black Copper Marans, and gave me half. Hers are fine, but mine have been dying at the rate of about 4 a week, I only have 5 left. They seem fine, eating drinking, foraging, then in the morning there will be 1 or 2 dead or nearly dead chicks. I have about 40 other chickens, between the ages of 4 months old and 3 yrs old, and they are all beautiful and healthy. The chicks are not wheezing or crusty, their droppings are normal. They have plenty of food and fresh water, a dry warm coop and free range. I would appreciate any thoughts you all have! I have never had losses like this.