Towards a comprehensive model of feather regeneration

Understanding of the regeneration of feathers, despite a 140 year tradition of study, has remained substantially incomplete. Moreover, accumulated errors and mis‐statements in the literature have confounded the intrinsic difficulties in describing feather regeneration. Lack of allusion to Rudall's (Rudall [ 1947 ] Biochem Biophys Acta 1:549–562) seminal X‐ray diffraction study that revealed two distinct keratins, β‐ and α‐, in a mature feather,...