Never drip water into open mouth of a bird
See the hole in the back of the Birds tongue? It is called a Glottis. It is the opening of their airway (trachea). All birds have this, you just can't see it so easily in most birds. The Glottis is the opening of the pathway directly to their lungs. This is why you should never drip water into a bird's open mouth. The water flows over the tongue and goes right into the Glottis, through the trachea and sits in the bird's lungs. (Called Aspiration)”