title: Critical periods in bird song learning.
authors.forename: H J
authors.initials: HJ
authors.lastname: Leppelsack
mesh_terms: D000818:Animals; D001306:Auditory Pathways / Q000502:physiology; D001717:Birds / Q000502:physiology*; D001921:Brain / Q000502:physiology*; D003423:Critical Period, Psychological; D005260:Female; D008297:Male; D009474:Neurons / Q000502:physiology; D014828:Vocalization, Animal / Q000502:physiology*