Nope, you're wrong!
Whenever possible, fruit juice (apple juice is a good starter) should be substituted for the drinking water. As an alternative, Tang (or its equivalent) can be added to the drinking water. (This may not be a practical suggestion for birds that habitually bathe in their drinking water.)

These additives or fruit juices provide more nutrients (vitamins, minerals, etc.) than water alone and they help to mask the taste of other items, (vitamins, antibiotics if necessary, etc) that may be added to the drinking water. Fruit juices that produce stains (for example, grape juice) should not be used.