 The skeleton of the kakapo differs from other parrots in several features associated with flightlessness . Firstly , it has the smallest relative wing size of any parrot . Its wing feathers are shorter , more rounded , and less asymmetrical and have fewer distal barbules to lock the feathers together . The sternum is small and has a low , vestigial keel and a shortened spina externa . As in other flightless birds and some other flighted parrots , the furcula is not fused but consists of a pair of clavicles lying in contact with each coracoid . As in other flightless birds , the angle between the coracoid and sternum is enlarged . The kakapo has a larger pelvis than other parrots . The proximal bones of the leg and arm are disproportionately long and the distal elements are disproportionately short . 
 The skeleton of the kakapo differs from other parrots in several features associated with flightlessness . Firstly , it <a href='got' title='1'><mark>has</mark></a> the smallest relative wing size of any parrot . Its wing feathers <a href='drop_aux' title='2'><mark>are</mark></a>shorter , more rounded , and less asymmetrical and <a href='got' title='3'><mark>have</mark></a> fewer distal barbules to lock the feathers together . The sternum <a href='drop_aux' title='4'><mark>is</mark></a>small and <a href='got' title='5'><mark>has</mark></a> a low , vestigial keel and a shortened spina externa . As in other flightless birds and some other flighted parrots , the furcula is not fused but <a href='uninflect' title='6'><mark>consists</mark></a> of a pair of clavicles lying in contact with each coracoid . As in other flightless birds , the angle between the coracoid and sternum is enlarged . The kakapo <a href='got' title='7'><mark>has</mark></a> a larger pelvis than other parrots . The proximal bones of the leg and arm <a href='drop_aux' title='8'><mark>are</mark></a>disproportionately long and the distal elements <a href='drop_aux' title='9'><mark>are</mark></a>disproportionately short . 
The skeleton of the kakapo differs from other parrots in several features associated w flightlessness . Firstly , it got da smallest relative wing size of any parrot . Its wing feathers shorter , more rounded , and less asymmetrical and got fewer distal barbules to lock the feathers together . The sternum small and got a low , vestigial keel and a shortened spina externa . As in other flightless birds and some other flighted parrots , tdafurcula ain't fused but consist of a pair of clavicles lien in txt witwitch coracoid . As in other flightless birds , the angle between the coracoid and sternum is enlarged . Thdaakapo got a larger pelvis den other parrots . The proximal bones of the leg and arm disproportionately long and the distal elements disproportionately short .