Hello, One of my 5 chickens has a bald spot at the tail about the diameter of a tennis ball. I then separated the feathers going up her back toward her neck and she is bald there also. Her skin has black specs which I think are follicles? Chickens were born March 1 I think the other New Hampshire Red looks like she may be starting to do this. Others look fine. I've never seen any itching, bugs or anything. What do you think???