Make sure you provide clean fresh water daily for bathing. One of their greatest enjoyments is their daily bath, quite often several times a day. My Bijoux bathes with much gusto, water is often all over the floor of the flight cage and room. Generally I would suggest lukewarm water for bathing, however each of my birds get much more enjoyment in cold water. When housed in a mixed aviary, other finch species often imitate the red-headed parrot finches bathing activity.
Dietary requirements are very important.
As this is such an energetic bird, they require a very well balanced diet. They will eat a variety of seeds, greens, vegetables and fruits, hard-boiled eggs, and mealworms. They are generally not too picky of the foods presented to them, although some greens may take them time to get used to. A good barometer in the amount fed is energy in equals energy out. Again, eating is also done with much gusto, don't be surprised if your red-headed parrot finch is a voracious eater.