Not true about parent birds abandoning if you touch the baby. We have had nests blow out of trees in storms. I fixed a small box with rope, put straw and sticks in it, put the baby birds in and put it back up in the tree. Parents resumed feeding and caring for the baby birds.
Leave them plenty of room and they will be back to care for the birdie.
Good news this morning!
Even though I looked in the nest about 2 am and he was alone, now that it’s light out the parents are back.
There’s a sound they make when they are agitated, kind of a long Brrrrrrzzzzzztttt... as soon as I opened the back door, they were on the fence making the sound, so I closed the door most of the way, and one flew right onto the porch. So I can only hope all is well.