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Austin Herpetological Society
Austin, TX
 
 
 
Texas Rat Snake
Photo Credit: Steve Schwartzman
TEXAS RAT SNAKE: Elaphe obsoleta lindheimerii

This is the most common large snake in the Austin area.

The snake is often incorrectly called a 'chicken snake', probably became of it's fondness for hen's eggs. It is often misidentified for several reasons. This snake will vibrate its tail, and depending on what the tail is hitting against may make a sound that will make you think that you are dealing with a Rattlesnake, even though they have no rattle!

While the juveniles are colored with brown blotches on a gray background, the adult's dark gray to black blotches will be on a red, orange, yellow, or even white background, giving the snake a wide range of possible color combinations. The adults are from 4 to 6 feet long, but I have actually caught one near Zilker Park that was 7'1" long!

These snakes will eat any kind of rodent, birds, and bird eggs. They are excellent climbers, and will go into attics and under homes in search of prey.

These snakes are very aggressive when cornered or captured. But hey, if your main diet consisted of rats, you'd probably have an attitude problem, too. These snakes are constrictors, but not venomous. If you don't have any food for them around your house, they will tend to stay away.

These are one of the most beneficial snakes in the Austin area, because of their ability to keep the rodent population down. - Tim Cole

 

March 17, 2004 - Travis County, Texas
by Tim Cole

This morning we (Phil Ralidus & son, Marty Wamsley, Adam Dawson, Deb Sydney, Jack Jeansonne, Nolan Dyer, and I) met at 10am. We went to one of my spots appoximatly 10 minutes from the house. The first large item we flipped, had a skunk underneath it! I've disturbed this animal before so I wasn't too worried about it spraying. It paced back and forth a few times before running into the woods. Under that item was more debris to be flipped and Nolan saw a small Bufo valliceps (Gulf Coast Toad).

I flipped a piece of tin and found a 30" Crotalus atrox (Western Diamondback Rattlesnake). It was lighter in color than what we usually see around here.

A minute later Phil and son found another 48" - 60" Crotalus atrox (Western Diamondback Rattlesnake).

Throughout this area we saw numerous Ground Skinks (Scincella lateralis).

A couple minutes after that, Adam uncovered another 36" Crotalus atrox (Western Diamondback Rattlesnake).

Needless to say, we all got a good look at it. Marty stepped on a board near the snake to get closer for pictures. While he and I were watching the snake, Phil and Adam were taking apart the rest of the wood pile in search of anymore hidden treasures! Phil almost immediately found a 24" Texas Rat Snake(Elaphe obsoleta lindheimeri).

Phil passed this snake onto me for Marty to shoot some more pics. A couple minutes passed by and Adam found another snake! A 4ft Texas Rat Snake (Elaphe obsoleta lindheimeri)!

Meanwhile Marty is taking pictures of the atrox and I noticed a coil of an atrox protruding from under the board that he was standing on! I called over to Adam and asked him why he didn't tell us about this other atrox! His response was "What other atrox?!". Under the board was about a 4ft Crotalus atrox (Western Diamondback Rattlesnake).

I removed the cover board from the second atrox and pointed it out to Adam and everyone else that had just been climbing around in the woodpile unaware of the second snake. During all this time neither snake moved or seemed too upset by our intrusion. I saw a few tongue flicks and that was about it. Ok, it's been a few minutes since Phil has found a snake. Never fear, for Phil has found in the same woodpile a 30" Texas Patchnose (Salvadora grahamiae lineata)!

In close proximity to the woodpile, Adam found under tin a juvenile Western Coachwhip Masticophis flagellum testaceus).

Moving along to an area that has scattered tin, I turn up a juvenile Checkered Garter Snake(Thamnophis marcianus marcianus).

Phil and I tear into some plastic roofing material and uncover an adult Plains Blind Snake (Leptotyphlops dulcis dulcis).

Shortly after this, Marty, Nolan, and Jack flipped a 4x8 sheet of plywood which revealed an adult Great Plains Narrow-mouth Toad (Gastrophryne olivacea).

We flipped over sections of an overhead garage door and revealed a 28" Crotalus atrox (Western Diamondback Rattlesnake).

We also saw a juvenile Texas Spiny Lizard (Sceloporus olivaceus).

Under the same was discovered a skeleton of what I believe to be a neonate atrox. We made our way to another area of the property which was more wooded and had a fair amount of tin. Nolan spotted the last inch of a striped snake tail disappearing into a pile of leaves. Marty found a piece of tin under the leaves which when he lifted it revealed a juvenile Texas Patchnose (Salvadora grahamiae lineata).

That was a good job by Nolan, spotting that small snakes tail! A few feet away from there, Adam turned up under tin a 32" Western Coachwhip (Masticophis flagellum testaceus).

Keep in mind that all of this happened in under 1 1/2 hours! Total count was 21 herps (not counting all of the Ground Skinks). A total of 10 species found. If I made any errors in who caught what or snake sizes, I apologize. We had a great time herping.

 
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