Vocal CordsVocal Cord ParalysisPhonationVocalization, AnimalVoice QualityVoiceVoice DisordersLarynxLaryngeal DiseasesLaryngeal MusclesLaryngeal MucosaLaryngoscopySound SpectrographyGlottisVoice TrainingDysphoniaFinchesSongbirdsSpeech AcousticsAcousticsKymographySpeech Production MeasurementAnimal CommunicationVibrationParrotsSpeechVocal Cord DysfunctionRecurrent Laryngeal NerveParakeetsLaryngoplastySingingLaryngitisHoarsenessLaryngectomyAuditory PerceptionLearningArytenoid CartilageLaryngeal EdemaPhoneticsStarlingsThyroid CartilageCanariesModels, AnatomicVideo RecordingLaryngeal NervesMusicAuditory PathwaysMucous MembraneSoundNumerical Analysis, Computer-AssistedTigersRecurrent Laryngeal Nerve InjuriesImitative BehaviorLaryngeal NeoplasmsBiomechanical PhenomenaPitch PerceptionElastic ModulusHearingBasal GangliaFeedback, SensorySpeech TherapyCricoid CartilageProsencephalonPressureStereotyped BehaviorVerbal BehaviorSocial BehaviorLaryngeal Nerve InjuriesSparrowsNonlinear Dynamics