When I need to handfeed, I mix the baby bird formula with water to a mashed potato consistency, and using a 1 cc syringe put the syringe as far down the throat as possible and depress the plunger. For an adult bird I usually give the whole syringe at a time, for smaller birds less. Wait a bit then repeat. She probably needs about 30-40 cc per day; if she is eating some on her own, correspondingly less. The water mixed into the handfeeding formula fulfills her need for water, although it is best to have some she can drink on her own if she chooses.