This little guy is feral. I had to squat in the cold for 10 minutes like a wildlife photographer to take this photo. He's super afraid of people
He left well-fed. He's visited a few more times since.
Keep feeding him and he might get used to you.
Is there a warm nest or box nearby for him? If not, you could try to give him a cozy place to stay warm for the winter.
If you are patients, by next winter he may be used to you enough that he will come indoors. :)