For dehydration-
Even though a chick or an adult may not drink when dehydrated or cold/ill, there is a way to stimulate them to drink. It's called the sipping reflex, and it means that if a drop of fluid lands on the beak, they will automatically sip at it. This is very useful for offering electrolytes/liquid meds by dropper or oil for impactions. You must avoid the nares (nose holes) though to prevent aspiration, and be sure to stay there with the bird long enough to administer several mls. It's useful to have a needle-less syringe marked, like baby syringes or vet syringes. 5 ml of most liquids would be a minimum, and remember that when using this method some will be wasted, so have a rag or towel on your lap if that is how you are positioned with the bird. In an emergency though,you could use a plastic straw or eyedropper, sometimes you need to spring into action. The drops should normally land on the curve of the beak. If the bird is restless, try dimming the lights. (You can use diluted gatorade if you want)
Are they on medicated feed? Whatever they have, moisten with water for a day or so to make it easier to swallow.
