I used to take in fallen baby birds from around my neighborhood; raised, acclimated, and set them free as they were ready. One day a man came to my door with a small branch from a tree he'd been trimming in his yard.. Attached to the branch was the smallest nest I'd ever seen, and in it was a baby hummingbird no bigger than my thumbnail. This was a first for me, and I had no computer or google to go to for help. This is how I saved him/her.. I mixed hummingbird food prepared as for outdoor use, and added a drop of liquid bird vitamin drops to a small syringe-full of the mixture / stuck his beak into the syringe, and the little 'tongue' that looked like a short piece of fishing line started poking in and out of the syringe.. he was eating!!! I kept this up for several days, watched him grow, and then I hung basic outdoor hummingbird feeders around the room. After about a month, I hung several feeders in my yard, and released the little miracle guy.. He fed in our yard for two seasons after that.. and then I never saw him again. It was an awesome experience, and well worth the efforts.