I just found a tiny baby bird who fell from his nest. The nest is not at sight, the parents were flying around, but the baby was unable to even put on his feet. How can I help him survive? Should I feed him water mixed with honey, baby food, raw egg whites? At this point he seems to be able to drink only, though he is fully covered with feathers. He is not a parrot. Should I take him to the rescue and rehab center for birds ASAP ?