Morphology of the Air Sacs in Crimson Rosella (Platycercus elegans) Parrots
that the air sacs. The morphology of the air sacs system has been described in many domestic and wild bird Abstract | The research was conducted with the aim to investigate the morphology of air sacs system in Crimson Rosella ( Platycercus elegans ) parrots. Five adult birds, two males and three females were used in this study. The lungs and air sac system were injected via trachea with 26% solution of Vinylite mass. The obtained cast showed that these parrots have nine air sacs. The clavicular air sac was the only unpaired, while the cervical, cranial thoracic, caudal thoracic and abdominal air sacs were paired. The morphology of the air sacs was generally similar to that reported in other bird species, however, some specific features were identified. As most prominent among them were a partial fusion of the cervical air sacs, communication between the left and right subpectoral and perirenal diverticula and connection between the claviclar and cranial thoracic air sacs. The present investigation provided detailed and comprehensive data about the morphology of air sacs system in these parrot species and these findings will be very useful for future clinical examination and treatment of this birds.