Novel Picornavirus Associated with Avian Keratin Disorder in Alaskan Birds
ABSTRACT Avian keratin disorder (AKD), characterized by debilitating overgrowth of the avian beak, was first documented in black-capped chickadees (Poecile atricapillus) in Alaska.Subsequently, similar deformities have appeared in numerous species across continents.Despite the widespread distribution of this emerging pathology, the cause of AKD rem