My encounters have been in Potter, Clinton, Schuylkill, Mifflin, and Centre counties. Better than half of them have been in one specific drainage…partly because I fish it several times per year, but also I think Rattlers CAN become pretty locally abundant. Meaning there’s areas in their range where they seemingly are absent, and there are areas where there are very good numbers of them. They’re definitely not spread out evenly amongst their range. This watershed where I’ve had numerous sightings appears to be one of those abundant areas…I’m averaging just shy of one sighting per year there, based on 2 or 3 outings per year. I’m not sure what the dynamics are behind this…habitat and food probably.
I’ve seen all of mine in late Spring or Summer near the bottom of stream valleys, and in one case swimming across Penns Creek…I didn’t believe it when I heard a couple guys upstream of me yell “Rattler” then start scrambling out of the water as something was swimming across the creek. Walked up, and sure enough there was a Rattler on the bank, still half in the water. I think seeing them down in stream valleys is more a function of me spending more of my time there fishing than that actually being the best place to spot them. I don’t spend near as much time up on ridgelines unless it’s part of the hike to get a stream. Most of my sightings have been on exposed rock or gravel bars, with some type of woody debris or rock crevice nearby for shelter. I’m extra cautious in these areas now. They’ve all been “rogue” sightings, just a single snake each time. I think the best place to find them in numbers is actually up higher on ridgelines in areas of exposed rock outcroppings, or in or near talus or boulder fields.
In at least three of the cases, including the one above in this thread, I came easily within one step of them before seeing them. In all of my sightings, none of them initially moved or rattled until someone touched them or tried to move them. In several cases, the snake never moved at all.
The first few times I saw one I remember my heart pumping and getting a bit of a charge out of it…mostly I think from me just not knowing what to expect from them. But after being around them enough, I don’t have that reaction any more. They’re not gonna chase after you and hunt you down. IMO in order to get bit you either need to unknowingly step on or otherwise touch one, or you need to be purposely agitating it. I wear knee high gaiters for this reason…I can’t always see where I put my feet given the forest undergrowth and I want the extra bit of insurance. As far as snakes in PA go though, they’re by far the most docile species I’ve encountered…not just venomous snakes, but in general. Harmless Northern Water Snakes and even Garters can be absolute jerks. There’s a reason why they use Timbers for most Rattlesnake gimmick shows and it’s their relatively relaxed demeanor. As long as you give them even just a little space, they won’t bother you.