This little chap flew into the patio door earlier and lay on the ground stunned.   Luna reached him before I did but although inquisitive she didn't touch him.   I picked him up and sat quietly stroking him for a little while, with Luna making sure he was alright.    It wasn't too long before he made an unsteady flight to a garden ornament and then into the shrub by the bird feeders.    
I feel especially pleased that:
a) we were there to help 
b) Luna was very good and didn't overwhelm him.