When a cat is very quiet, I interpret that as a sign that it is either feral or at least unsociable, but that is not a certainty. When I gently climbed up to him, he took a look at me, voiced some displeasure, and walked a little farther out the limb to get away from me. While I was disappointed that he moved away from me so readily, I found it reassuring that he actually spoke to me, since I would not expect a feral cat to do that. I spent the next several minutes trying to earn his trust and, hopefully, even his friendship as I worked to safely move closer to him. He was clearly uncomfortable with my presence, but I held out hope that he would, in time, become more comfortable with me.
I turned him over to Connie and Donnie, and they took him home and released him inside. After some time inside, the cat began to reveal a sweet and affectionate disposition, and they are continuing to care for him until his owner can be found.
Again, I forgot to turn on my camera, so I wish to thank Connie and Donnie for providing the only pictures that I have of this rescue.