Raindrop: The elevation is at approximately 6,900 feet above mean sea level. You have described the symptoms well. According to the hatchery, they believe I need to cut down feeding. I am going to try that and let you know. Thanks for your welcome and support.
greyfields: I did not want...
I have been raising Cornish X Rocks for the last 5 weeks all of sudden I have dead chicks. I check for obvious signs of infection. The last one that died had labored breathing. Anybody has any ideas of the cause?