Copperheads seem to travel in pairs, which is why you probably find another after relocating the first. There is also a nonpoisonous snake that closely resembles a copperhead. A veterinarian told me this. He said that people often kill it thinking it is a copperhead - even the old timers, but it isn't. One of the only ways to tell is to look for fangs, which I'm sure you won't want to do unless it's dead.
Have you checked with the ag (agricultural) extension agent in your county about how to peacefully co-exist with copperheads? The number will be in the white pages of your phone book, or you can check their website by Googling. The website will have a ton of really good, scientifically sound information regarding all kinds of plants and animals found in your area.
I'm not a big fan of copperheads, but good on you for not killing every one you find, as they are actually a beneficial animal.
The presence of more than one indicates an environment favourable to them, might be you have a rodent population the copperheads see as a moveable buffet:) Every rat or squirrel the copperheads eat is one less rodent who might end up in your car, walls or attic chewing electrical wires.
However, copperheads can also hurt you or yours with their very serious bite. Best to get some trained advice from the ag extension agent nearest you.
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