Baby Sparrow fell from nowhere, What to do?

Hi had a similar situation with a baby dove- bring the bird in at night time as they do not feed at that time and keep it warm. During the day place him in the spot where you found it the mother should find him and start feeding him on the ground (make sure there's nothing that will catch the little bird in the open such as cats or ealges). If he doesn't get fed by the pasents try plain pronutro that's mixed with water. This can be administered through a spoon that is sligthlt bent inwards or syringe. Good luck