What would make feather colors change? I have Australorps and they all had the typical black feathers with the iridescent green. They all had a hard molt at the end of fall/early winter and 2 of them now have very dull brown/black feathers, no green at all, and missing feathers from their heads and parts of their bodies. Are the missing feathers related to the change in color? Completely unrelated? Should I be worried that their feathers have changed? Should I be worried that they are missing feathers? Are they being pecked by their sisters? I have no rooster. They are almost 2 years old and have all been raised together since birth. All are eating well and no one is being excluded when I give treats. Should I be worried?