What sad is the incredible number of them at humane shelters due to irresponsible owners that don't get them neutered.
I've live trapped a few in past that were breeding on my deck at 3 A.M. driving my dog nuts and waking us up. One of my neighbors moved away and dumped his cats. 
Same thing here about 13 years ago. People next door moved out suddenly. Left their garage door open about a foot, and the entry door inside open, and about a dozen cats as a bonus. We had cats in our yard all the time. I could live with that, but come spring or early summer, they had multiplied. All was okay until my wife left her car windows down for a couple of hours between errands. One of the cats chose to mark it's territory in our son's car seat. Then it was war. I won. Apparently the people who bought the house had to tear out all the subfloors, but had nearly any cats to deal with by then.