I have two Light Brahmas 3 months old and for the past month they have been preening themselves constantly and keep biting the spines on their feathers, and of course, I now have feathers (and what looks like little pieces of plastic) everywhere. Is this normal? Are they preparing to molt? Most importantly, should I be concerned? Since I'm brand new at raising chickens I am in need of some answers from the "Pros". Thank you for any answers and help you can give. Everyone on here has always been extremely helpful. Besides, it is without a doubt, the most entertaining web site out there.....when you read some of the funny questions and comments about chickens. Thanks BYC!!!!