| novel picornavirus associated with avian keratin disorder in alaskan birds. | 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 remains elusive. as a result, it is unknown whether suspected cases of akd in the afflicted species are causally linked, and the impacts of this pathology at th ... | 2016 | 27460795 |