How to administer oral medications to a bird
Gather all your supplies, fill your syringes and have them waiting for you.
Gently pick up your bird, give him lots of hugs and kisses, and hold him carefully on either side of his head. Play peek-a-boo with him, smiling and laughing all the time.
Carefully open the mouth and place the syringe on the side of the beak, slowly squeezing the medication into the beak. Allow time for swallowing between mouthfuls. Keep giving those hugs and kisses! Give a reward when finished.
There! Done! See? Wasn’t that easy?
Source: Avian Web