A Little Bit More About Reptiles and Amphibians in Our Part of the Desert

Leave Las Cruces and cross these mountains to get to WSMR

I am learning more about this part of the Chihuahuan Desert all the time. When we went to Night in the Desert last week we met a lot of experts, one of whom was Doug Burkett. I've been reading his book, Amphibians and Reptiles of White Sands Missile Range; Field Guide 2008* and would like to share some facts from the book with you.

The White Sands Missile Range (often referred to as WSMR) is located on the other side of the San Andres, San Augustin, and Organ Mountains from Las Cruces, where I live. I had no idea that the range was such a huge tract of land! It has over 2.2 million acres, and within its borders contains White Sands National Monument and the San Andres National Wildlife Refuge.

Coming through the pass toward the Tularosa Basin and WSMR

Quoting from the book: Seven species of amphibians and 47 species of reptiles, representing 3 orders and 12 families have been documented on WSMR. There are six species of toads (3 spadefoot toads and 3 true toads), 1 salamander, 1 turtle, 19 lizards, and 27 snakes. Five rattlesnake species occur on WSMR and bites from all are potentially lethal. All other snakes occurring on WSMR are either nonvenomous or mildly venomous and are not dangerous to humans.

Here are some interesting facts I came across while reading the same book:

• The color of the Southern Plateau Lizard (Sceloporus cowlesi) "ranges from white on gypsum dunes (found at the White Sands National Monument) to nearly black on lava flows," such as the one near Carrizozo.

Gypsum dunes at White Sands National Monument

• A population of Trans-Pecos Ratsnakes (Bogertophis subocularis) from the Carrizozo Lava Flow is consistently darker than the same kind of snake living in other areas of WSMR.
• Hog-nosed Snakes (Heterodon nasicus) "do not constrict prey, but sometimes grasp lizards in their mouth and repeatedly roll over to help subdue the prey before swallowing."
• A Night Snake (Hypsigiena torquata) "in captivity bit and paralyzed a Gray Banded Kingsnake (Lampropeltis alterna) nearly twice its weight and attempted to consume it. After a forced release, the kingsnake revived within 20 minutes."
• "A Great Plains Ratsnake [Pantherophis emoryi] in captivity ate an adult Hog-nosed Snake after sharing a tank for 5 years."

*****

*About obtaining a copy of the book: I got my copy of Mr. Burkett's book directly from the author and have been unable to find this book online. If you are interested in obtaining a copy of your own, you might try writing to:

U.S. Army Garrison - White Sands

Directorate of Public Works

Environment Division

White Sands Missile Range, New Mexico 88002

~or you could try contacting the White Sands Missile Range online.

The Intrepid Naturalists Explore the Desert at Night, Part 3

Here is the photo from yesterday's post that was giving you a hint about the next learning station at the Nighttime in the Desert program we attended last weekend.

If you guessed that it was a close up of snakeskin, you were absolutely right. Sorry, but you knew we'd have to talk about snakes, sooner or later!

Here is a little more of the skin of this Prairie Rattlesnake, with someone holding a book in the way

And these are the rattles

Here's the funny thing about the photos above. I asked permission (of course) to take photos while there were just a few people at the learning station and was so intent on getting the pictures, leaning in nice and close, that I totally forgot about the presenter. He was holding a fairly large (and very alive) specimen just inches above the spot where I had maneuvered my head and camera to take the shot of the rattlers on the dead snake.

Once I got over my close brush with desert snakedom, I realized how lucky we were to have Doug Burkett, author of Amphibians & Reptiles of White Sands Missile Range; Field Guide 2008, right there with us to share his knowledge.

Doug has been interested in snakes since he was in elementary school, and in his 18 years out on the White Sands Missile Range he has studied and collected specimens of its reptiles and amphibians. He is an absolutely marvelous speaker and goes to elementary and middle schools around southern New Mexico to teach about desert animals. The kids must be fascinated!

Doug shows us a rat snake

Here are some of the things about snake behavior that we learned.

• Snakes don't see you; they sense your heat and figure out how big you are.
• Based on your size, a snake determines whether you are something to eat, or something that wants to eat him.
• Snakes don't really want to mess with us--we are too big and inedible
• If you interrupt a snake when he is headed somewhere, his inclination will be to continue in that direction when he gets the chance. For instance, if you are standing west of a snake who is traveling from east to west, and if you should pick up the snake (the mind boggles!) and toss him back along his trail, he will come right back at you. This isn't because he is coming at you, it's just because he is still headed in his original direction. If you've ever tried to help a turtle across a road, you will recognize this behavior--don't try to turn him around, because he knows where he is going.
• If you should try to capture a snake by grabbing him behind the head, he will struggle. Wouldn't you? Doug demonstrated how you should place your hand along the snake's back and ease your other hand up toward the head. This is, of course, only done with snakes that are non-venomous. Naturally, in my case, this isn't done at all!

This last photo is of a Checkered Garter Snake. It was taken through the side of a mesh cage, which is why it looks a little fuzzy

The Intrepid Naturalists would like to share a bit more about desert reptiles and amphibians, but first--some photos of the desert sky at dusk tomorrow for Skywatch.

Hillcrest Zoo: Reptiles

Look closely to see the second boa on the left. It's hard to take photosinside the Reptile House.