We've been in the chicken game for a little under a year now. We have a flock of various breeds, including a Polish crested rooster. A few months after getting the flock we noticed him losing feathers at the back of his crown, but really dismissed it as normal "wear and tear" of a flock -- thinking that maybe even the hens were getting a little aggressive with him. As we entered the fall/winter, I admit the feathers seemed even more scarce on the back of his crown -- kind of making it look like he had a surfer haircut on the front or (as we affectionately call him after the great rock musician) Steven Tyler. Now, unfortunately with the atypically cold weather, his poor head has really taken a beating. We fear that it has gotten frostbitten like his comb/wattle. (picture below, sorry it's a little fuzzy) We really want to get to the heart of what is causing this and help prevent additional damage. Appreciate any insight you may have. Some theories we've entertained: - some type of lice or parasite? - pecking from aggressive hens? - or is this normal from the Polish crested breed? Thanks for your help!