Vernalis

 It took a fair bit of effort to get to the cleared, grassy hilltop my partner in field herping, Bruce, and I walked on warm, sunny late summer eve. Admittedly, Bruce had done most of the research, pouring over research papers, range maps, and even birding forums for what clues they might contain. It that was careful online sleuthing, more than a few highway hours, a night in a junky motel, then a variety of other chaotic transport that had led us to this place. Bruce and I were probably a few hundred feet apart at the time, just walking slowly in the grass and looking at the ground in front of us. To any passer by, we probably looked like we were looking for a lost wallet or phone. That wasn't our task though. We were looking for one of the most striking native animals in the northeast, and I was about to see one in the weirdest way. 

I zigzagged along, slowly, looking carefully for something pretty much the same color as the grass. I happened to look up though, in the general direction of a utility building. It was a fairly plain, windowless structure with reddish lap siding. There was about a foot and a half gap between the siding and the ground below it, and I watched as a roughly ten inch long bright green snake dropped out from the gap under the siding to the ground and slithered quickly into the vegetation. Watching this from a distance of a couple hundred feet, I cracked a smile and chuckled lightly. I wouldn't have believed it if someone told me I would see such a thing, but this place was so loaded with smooth green snakes that it wasn't as shocking as it might otherwise be. 

The smooth green snake, Opheodrys vernalis is native to the Northeastern US, Canadian Maritimes, great Lakes Region, and Upper Midwest, as well as scattered, discrete populations in Northern Mexico, Texas, Colorado, and New Mexico. They are small, dainty snakes that typically max out at 20 inches long, most being quite a bit smaller than that. Their standout trait is their bright green coloration, which can vary from olive to almost chartreuse. There's a few examples of tan colored smooth green snakes from Wisconsin, affectionately called smooth tan snakes by some herpers. When a bright green vernalis dies, the yellow pigmentation in their scales breaks down and the snake turns blue. Both living and dead, a smooth green snake is a creature that looks out of place in the northeast. Finding one, particularly for someone like myself that absolutely adores wild animals and appreciates the aesthetics of a brightly colored scale and the way light plays on it, looking under a stone and seeing an almost absurdly bright green snake in a perfect coil underneath never fails to inspire awe. Smooth green snakes look like they should come from the rainforest. And yet Bruce and I had traveled substantially northward to try to see as many as we could. Even before that one dropped out of the side of the building, we'd had a phenomenal amount of success with a variety of snake species, and smooth greens were the most numerous. 

This was especially exciting for us because smooth green snakes are a much declined species across much of their range in southern New England, where Bruce and I spend most of our time looking for snakes. The species needs meadowy, low brush, grassland habitat to persist. This can come in the form of coastal habitat where salty, dry conditions, sandy soil, and wind keep vegetation relatively low, old farmland that is lightly maintained and kept grassy and lively, and mountain top balds where trees grow slowly and open low brush persists. Unfortunately for green snakes, the way southern New England has developed hasn't favored meadows. A lot of farmland has now been developed, and some areas that were allowed to remain early successional habitat have now become wooded. Without easy travel corridors that they once would have benefited from, isolated pockets of smooth green snakes must make do with diminishing habitat and can't move to re-populate areas that change to become more favorable. The species' diet has also given it problems. Vernalis favor grasshoppers, soft bodied caterpillars, and spiders. Pesticide and insecticide use has taken a significant toll on these wonderful little snakes. Mosquito spraying, pesticide use on crops, and other chemical use in their habitat mean that otherwise suitable land often no longer has green snakes.  To find the abundance we'd dreamed of, we had gone somewhere that never had pesticide use, was built on very minimally, and had plentiful open habitat. It was a shame we had to go so far, nor should we have had to. Not that long ago they were more numerous in Connecticut, on Long Island, along coastal Rhode Island, and into Massachusetts. It isn't uncommon to run into older folks that will tell you "Oh, those green grass snakes? We used to see lots when we were kids". 

The habitat we searched had an exceptional abundance of another species I see in Connecticut but generally have to put a lot of effort into: the Northern redbelly snake. Redbelly snakes are not the most popular among the recreational herping world, they're widespread and can be quite numerous and are a diminutive species. But they are variable, often vibrant, and in my opinion photogenic. They can also be quite secretive, often going undetected for years even in fairly populated areas with a significant number of eyes out looking. 

Overall, the abundance of wildlife and native flora was robust in this place. It was refreshing when compared to some of the habitat left in CT that still holds a few green snakes, much of which is loaded with invasive plants and suffers from a compromised food chain, with perhaps too many of some species and far too few of others. One of the sites I visit that has records of vernalis is progressively more and more packed with bittersweet and large stands of mugwort. Another is so surrounded by development that it's hard to imagine that it could last forever, though the species does manage too eek out an existence in narrow corridors of habitat even in natural circumstances. That said, those populations don't have to worry so much about being hit by a car, chopped up in a mower, or poisoned by chemicals. In Connecticut, this has led to the species being listed "Special Concern", a designation that doesn't give a species a ton of protections, but means that its habitat is limited and the species isn't stable because of it. 

The story of the smooth green snake in much of Southern New England is subsequently a sad one, one made of lists of places that had but no longer have the species. There was even a time when human activity wasn't harmful but helpful to the vibrant snakes. Widespread land clearing coupled with slow moving farm equipment, no pesticide use, no motor vehicles, and a lower human population density meant that the special likely thrived in the farmlands and grasslands not long after colonization. They were quickly overtaken by the industrial revolution, though, and then really took hits as insecticides like DDT became heavily used, suburban sprawl continued, and traffic increased. The decline of any species is a sad one, much less such an iconic and vibrant one. Many New Englanders may never get to see that shockingly green flash of scales as a skittish smooth green snakes vanishes into the grass. In Missouri, where there hasn't been a report in more than 50 years, there is little to no hope or the species. In some other midwestern states they are listed endangered or threatened. Hopefully, with awareness and care, we can stem the tide. 

If you see a smooth green snake, observe and appreciate it for what it is. Take steps to reduce your impact in their habitat, like avoiding moving rock (cairns suck!) and logs or trampling low brush. And fight against further development that could continue to extirpate these animals from more and more of their range. 

Walking through town on our last day in the promised land of green snakes, I noticed a little bit of plastic tarp overlapping a rock wall at the edge of a garden. I gently lifted the corner of it and spotted the largest individual we'd seen all trip, a robust female that was thick from her head to her cloaca and had incredible coloration and robust crocodile jaws. It was one of the most stunning snakes I'd ever laid my eyes on and it was just under some plastic tarp in a garden. If we encourage the right behaviors, there's no reason there can't be diversity right in our backyards, whether it be brightly colored little snakes, bobcats, or butterflies. A lively yard and diverse, healthy habitat is much better for the soul than plain, mowed lawns devoid of diversity outside a few Lyme carrying ticks and some ants. This place was rife with that, liveliness was abundant, and everyone that lived there was happier that most Southern New Englanders I'm used to running into on the day to day. It's hard not to draw some correlation. 

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