The robins built a poorly made nest or the weather deteriorated it, so that it is slanting to one side. There were 3 babies about 1 week to 10 days old. One fell out and is on the ground. It was able to hop about 20 feet away. It spent the night on the ground. Will the mother care for it on the ground?
As long as the baby can call, the parents should feed it and take care of it.