The question--will ontogenetic changes turn this little western coachwhip pink?

One of the most noteworthy snake features of the Big Bend region is to be found on adult western coachwhips, Masticophis (you are free to call them Coluber if you choose!) flagellum testaceus. The adults assume a bright (some call it “screaming”) pink coloration. The juveniles—up to at least a 3 foot length—are typically a straw tan with broad, light, bands.

Coachwhips and the related whipsnakes are usually very evident in the Big Bend region. Since both Jake and I hoped to surprise and photograph one of the pink adults, we made a point of searching for them on several mornings. On most of those days we drove for at least 50 miles on our searches, and on one occasion we drove for more than 200 miles. Zero coachwhips, zero whipsnakes. If you’re thinking “what a failure,” just imagine how we felt. We had failed to find one of the most conspicuous and commonest of Big Bend’s diurnally active snakes. This stationary high pressure system was really crimping our style (and our hopes). With our allocated trip duration quickly drawing to a close we decided to move up to northeastern Presidio County. Could (or would) a change of venue make a difference in our success (or lack of same)?

Did it make a difference? Well, we at least saw a coachwhip—a straw colored juvie-- streaking across the roadway. We saw Texas horned lizards and lesser earless lizards. We saw desert box turtles. And we saw Ron and Daniel Tremper who had just seen an adult pink colored coachwhip cross the roadway and stage one of their oft-duplicated yet always surprising disappearing acts—probably by scooting down a ground squirrel hole.

But, and for us this was an important “but,” Ron and Daniel presented to us without ceremony a 30” western coachwhip that they had chased down (all I can say is a respectful “WOW”). It now sits in a place of honor as the only snake in my very small herp collection. I get bitten by it almost every day but I’m hoping that as it grows and if it drinks enough blood it will assume the beautiful pink of its Presidio County brethren. I’ve gotta get that picture somehow! Thanks, Ron and Daniel. I’ll keep you posted on the ontogenetic changes—if any.