A relatively large Aquatic Coralsnake (Micrurus surinamensis) found near camp in Peru. These snakes are relatively common, found in the swale alongside the river and smaller drainages, where they’re on the hunt for eels and other fish, and the occasional other snake. Compared to other coralsnakes, they are heavy-bodied, with a wide head and short tail.
A common sight around waterways south of the US are the cat-eyed snakes; mildly venomous, cat-eyed snakes (Leptodeira sp.). However, they do make it into the country in one small area of extreme south Texas. We found this Northern Cat-eyed Snake (Leptodeira septentrionalis) there several years ago. For friends in Arizona, these are most closely related to the nightsnakes (Hypsiglena sp.), both in form and lineage.
Vidal, N., Dewynter, M., & Gower, D. J. (2010). Dissecting the major American snake radiation: A molecular phylogeny of the Dipsadidae Bonaparte (Serpentes, Caenophidia). Comptes Rendus Biologies, 333(1), 48–55. https://doi.org/10.1016/j.crvi.2009.11.003
A young Sonoran Whipsnake near Phoenix. These snakes are extremely fast, daytime hunters that go after everything from lizards to other snakes. Most encounters people will have with them are as a blue-grey blur disappearing into the bushes, where it will seem to just teleport to another dimension if you try and find it.
Despite being incredibly easy to observe in surrounding mountain ranges, the Southwestern Speckled Rattlesnakes in the Sierra Estrella just southwest of Phoenix are harder to spot. They’re likely just as common, but the steep terrain and majority of prime geology for the species being inaccessible reservation land make it a challenge to see one. Kris Haas spotted this pretty one way up mountain.
A Mojave Rattlesnake from the grasslands of southeastern Arizona. This species in the area can be highly variable in appearance, from muted green tones to deeply contrasting browns and blacks, each can look very different from the next. This one is a more classic look, with dark diamonds against an olive green base color.
sThe stripe behind the eye, too, is classic Mojave Rattlesnake, extending straight back and never intersecting with the mouth. The two-tone tongue is also perfectly normal, though not always so pronounced.
A young Arizona Black Rattlesnake from the eastern end of their range, in Greenlee County, Arizona. With most of the light cross bars already having disappeared into the background color, this one may be an interesting looking adult.
This Arizona Black Rattlesnake noticed me at the same time that I saw it as I climbed up a steep, rocky hillside. I stopped and got a few photos, and saw another one right next to it deeper in the crevice of the rocks. I was able to then back down the hill for another route up without further disturbance, and it resumed its move out to the open to get some sun.
A Southwestern Speckled Rattlesnake resting outside its aestivation den, which it shares with several others to wait out the hottest, driest time of summer.
One of the many species of coralsnakes that can be found in the matrix of materials that make up the floor of the Amazon rainforest. This is a Hemprich’s Coralsnake. Also, its mimic, a harmless Black-headed Calico Snake. The body and head shape, as well as details of the pattern, are pretty different in a lot of ways, but it’s more than enough to make you think twice about reaching for one on a late night jungle hike when you see a black and orange flash in the leaves.
A Grand Canyon Rattlesnake from northern Arizona. In time, the pattern on this snake may continue to degrade and fade, but not to the same degree as is common for females of the species.
