| They have a tracheobronchial syrinx with one pair of intrinsic muscles and modified bronchial and tracheal rings. |
| As each branch of the syrinx produces sound independently, it means that a penguin produces two different voices at once. |
| The success reported in the small case series varies from no improvement to post operative resolution of the syrinx. |
| Well a syrinx has two passages, divided into two sides, so birds can make two sounds at once. |
| If the people have the syrinx, ascertain the series of musical intervals yielded by its tubes. |
| The aim is to restore CSF dynamics and if this can be achieved then the syrinx can resolve. |
