A lateral view on in situ casted the respiratory system in Crimson Rosella parrots showing: 1. bronchi, 2. clavicular air sac with it’s: a) diverticula cardiaca, b) diverticula sternalia, c) diverticula subpectorale, d) diverticula suprahumerale, e) diverticula axillare and f) divertiuclua subscapulare, 3. cervical air sac with its diverticula vertebrale, 4. cranial thoracic air sac, 5. caudal thoracic air sac, 6. abdominal air sac with its cranial (i) and caudal (j) diverticula perirenalia and diverticula femoralia (k) and trachea (7). 

A ventral view on corroded in situ specimen with visible: 1. clavicular air sac, a) diverticula cardiac, b) sternalia, c) subpectorale, d) suprahumerale, e) axillare, 2. cervical air sac with its diverticulum vertebrale, 3. cranial thoracici air sac, 4. caudal thoracic air sac, 5. abdominal air sac with its cranial (i) and caudla (j) diverticula perirenalia, femoralia and 6. trachea
 

A cranial view on partially fused (*) the cervical air sacs (1), diverticula vertebralia (a), 2. trachea, 3. clavicular air sac, subpectoral (c) and suprahumeral (d) diverticula. 

A ventral view on abdominal air sac (1) and diverticula perirenalia cranialis (a), caudalis (b) and femoralia (c).