I'm sure others made these recommendations:
1) the snake could be gravid and ready to pop any day. Depending on where you live, this is the time of year when copperheads are giving birth - you might want to make sure your cage is "baby proof" as you could be in for quite a surprise
2) the snake could be going into a shed cycle. wild snakes are much more apt to not feeding during these cycles
3) I'm assuming you are keeping these snakes in separate cages, if not, DO!
4) Provide a thick substrate of forest humus, scatter a nice layer of dead leaves on top (oak works well) and then scatter around some nice dead limbs and a few hide areas. Oftentimes, they just need to feel secure. Keep a low light affect from a UV full spectrum - in this set up you'll actually enjoy watching your copperhead!
Hope that helps
Rob Carmichael, Curator
The Wildlife Discovery Center
>>2 weeks ago I caught 2 copperheads. One had mites and I want to thank you guys for your responses, problem solved. The problem now is that the one that had mites has fed twice so far but the one that I really want to keep is not eating. He looks very healthy and fat. I want to let one go but I don't want to let the one that is feeding go until I'm sure the other will do well in captivity. My question to you nice people is this, How long can I keep this animal safely before I must let it go? Is it uncommon for a newly caught copperhead not to eat for a while? I caught these animals high on a mountain without a stream in sight, so They must have been feeding on rodents. One of them pooped out a sparrow wing.Thanks guys, Brian
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Rob Carmichael, Curator
The Wildlife Discovery Center at Elawa Farm
Lake Forest, IL