Chad,
That sounds sick
Your poor cat
However, pets left to roam without their owners in control of them are often either targets of cruelty or they get into trouble of their own volition.
Cats are particularly vulnerable when left to roam unattended by their owners, sometimes being killed by predators (even in an urban environment), accidentally run over, taken home by well-meaning people who think the cat is a stray, and by being victims of cruelty.
Cats left to roam also cause trouble, unfortunately, by using neighbour's gardens and flowerbeds as their litter boxes, and by killing countless newly fledged and adult song birds. I cannot tell you how many young robins I've seen caught and needlessly killed by cats over the years
And it's not like we have so many song birds, due to environmental degradation, etc, that bird populations can withstand the additional attack from well-fed pet cats.
I sure hope you find your cat and that he is kept safely indoors where he cannot become a victim of chance, nor victimize any other living creature.