part of part of in taxon capable of part of capable of part of vocalization behavior Aves trachea syrinx organ http://upload.wikimedia.org/wikipedia/commons/8/87/Syrinx.jpg UBERON:0009074 syrinx avian vocal organ Wikipedia:Syrinx_(bird_anatomy) Vocal organ of birds, located at the base of a trachea. NCIT:C111323 vocal organ