Since they're small, budgies are relatively inexpensive to care for and feed. But contrary to popular belief, a diet consisting only of seeds is not good for a small bird like a budgie, and can even cause health problems. Instead, veterinarians recommend a budgie diet that includes pellets and fresh fruits and vegetables including leafy greens. It's OK to feed budgies seeds as part of this diet, as long as they're getting enough nutrients from other foods.