Final word on the bird

I walked out on the deck to find a little bird staring at me. Quite startling. My first thought was that those baby birds were finally old enough to leave the nest. Unfortunately, the nest was on the ground, empty. This particular bird couldn't fly more than a few feet, but it didn't seem to be suffering. Hopefully it's able to feed itself now. I didn't see the others, but they could have scooted under the fence or been hiding. As long as we don't find any baby bird leftovers from some predator, I'll be happy. Now what to do with the nest? Is it ok to let kids touch it? Or is it hazardous? I have no clue.