I will get my daughter to help me get a picture tomorrow to post-not great with technology. The rooster is approx 20 weeks old and he eats the crumble feed from the feed store. He eats and drinks water fine. I have not noticed these spots before but I was petting him today and lifted up his feathers around the neck and saw black round areas on his skin. Able to brush areas off easily. They do not appear to be moving or crawling and it was not just dirt and after checking- he does have these areas over his body; however not covered, just scattered about. I have not dusted the coop with anything except did mix up some permethrin and water and spray coop out before placing new bedding 8 days ago. This was a recommendation at the feed store to use as a fly repellant. Thanks for any advice!