It’s true, felted chickens have no feathers to lose…
As I ramble around the Internet looking for good chicken resources and stray factoids, I came upon this one – winter lighting that prevents molting (Robert Palmondon’s chicken newsletter). Other sources around the Web note that changes of seasons toward less light can inspire molting, but folks disagree on whether home chicken raisers should bother trying to “up egg production” during the winter by adding additional lights in the coop.
Meanwhile, for the detail-lovers in the crowd, the Mississippi Agricultural extension informed me that chicken molting has a definitive feather sequence, see more info here.