I have never needed to kill a semi-poisonous snake, let alone suffer hearing damage over it. Snakes have about a thousand brain cells and move at about 5mph.
They also want nothing to do with you. By the time you have noticed the presence of a snake (in the western hemisphere, anyway), there is no danger of an accidental misunderstanding.
I might even rather get bit by a copperhead (at least anywhere below the knee, lol), than to shoot a G27 without ears on! But if I have seen the snake, it's no contest. I will suffer neither.
Chickens will definitely kill and eat snakes, lol. Even smaller birds than chickens will pwn a copperhead. Many rodents smaller than a rat will also destroy a copperhead. Copperheads prey on smaller mammals and birds that are asleep and unawares.
Haha, for some reason I'm reminded of an incident what when I was around 6 or 7. I was sitting outside, and a wasp landed on me. Even at that age, I knew perfectly well a wasp has no reason to sting me, unless I accidentally provoke it. For whatever reason, I decide to watch my visitor, in no hurry to shoo it away.
About this time, my mother comes outside. She sees it and immediately screams and tell me to hold still. Before I can even get any words out, she's coming at me while rolling up the magazine she had in her hands. She repeatedly swats the wasp... just good enough that is stings me 7 times before it dies. That was a sad day for me. Wasp and I both suffered cuz my mother was ignorant. If the wasp had bothered me, I would have flicked it away with one fingertip.