Morphology of the syrinx of three species of birds from Brazilian cerrado (Psittacara leucophthalmus, Rhynchotus rufescens and Cariama cristata): Gross anatomy and light microscopy study

• DOI: 10.1111/ahe.12940
• Publication Date: 2023-06-17T05:45:55Z
• Authors: Elton Luis Ritir ...; Fernanda Zuliani; Gabriel Corrêa de...; Salvatore Desantis; Bruno Cesar Schim...
• Keywords: Syrinx (medicine); Parakeet

Abstract The aim of this study was to describe the morphology trachea and syrinx at macroscopic light microscopy levels three species birds from different orders that inhabit Brazilian cerrado. For that, five adult specimens (three males two females each species) white‐eyed parakeet ( Psittacara leucophthalmus ), red‐winged tinamou Rhynchotus rufescens ) red‐legged seriema Cariama cristata were used. collected destined for anatomical histological studies. studied presented an elongated path originated in larynx extended caudally syrinx. No sexual dimorphism observed species, probably because it is associated with their song, which very similar between these species. findings allowed us classify as tracheal tracheobronchial seriema. In general, morphological features those described other birds, such presence intrinsic extrinsic syringeal muscles, lateral medial tympaniform membranes, would represent important structures sound production through vibration during expiration eventual inspiration. structure avian cerrado consistent ability perform a potential vocalization, especially emits characteristic sounds loud can carry several kilometres.