It’s a myth that the parents of a wild bird will reject a baby touched by human hands. The fact is birds have almost no sense of smell.
Baby birds that have fallen from their nest should be returned, as long as the nest can be safely reached. If the nest cannot be reached, place the baby bird in a substitute nest close by. A small margarine tub or berry basket lined with dry grass can work nicely. Now, from a distance, watch to see if the parent comes back to take care of baby.
Young birds with feathers (fledglings) spend time on the ground while learning to fly. This is a normal part of their development. A fledgling should only be removed if it is in imminent danger, e.g., the baby bird is too close to a roadway or there is a free-roaming cat in the area.
Baby birds that cannot be returned to their nest, and those in danger, should be placed in a small box (with air holes) and taken to Safe Haven as soon as possible.