We found an injured hummingbird, called them and they said to bring it in. We made a donation, $$$, toured the facility and had a wonderful time. Unfortunately the bird had to be euthanized. They were kind and compassionate. Give them a call.
Parent fixes often only return 1 to 2 times a day. I'd recommend leaving the baby undisturbed unless you know something had happened to the parent.
If you call them they will help you with that.
Thanks! Your answer is awaiting moderation.