N is for...
Nostrils or nares.
The 2 holes in the upper part of the beak are the entry point to the mouth cavity for breathing air. At the back of the tongue is a slot which leads down into the larynx and trachea, closing firmly when the bird swallows.
Food and water pass either side of and behind the tongue down to the stomach. It is well worth looking at anatomy well before you ever have to give a bird medication.
