The week began with a visit from our dear friend Roger Repp, who wanted to check out our new study site and track some of the snakes. We had barely started our hike down Hot Springs Wash when we came across a very healthy looking Sonoran whipsnake (Coluber bilineatus). As is typical with this species,… Read More


A Sonoran whipsnake (Coluber bilineatus) at Muleshoe Ranch. Our first week of tracking was pretty uneventful.  We release snakes as soon as possible after their transmitter implantation surgery so that they can recover in their habitat. So typically the first week or so is pretty slow; the snakes lay low while recovering and don’t make… Read More


One week to go and we haven’t found any Arizona black rattlesnakes yet (remember, we wanted six). The clock is ticking. On the afternoon of 26 September, I started my snake search by checking on the bird-eater. He was in his usual spot, waiting for a thirsty bird. I then hiked downstream in hot springs… Read More


28 April:  Molly basks briefly before leaving the security of the den to fulfill what is on every rattlesnake’s mind: the first meal of the year. It’s been over seven months since they’ve last had a chance to eat, so they’re probably quite hungry. Molly comes out first and coils on the left. The snake… Read More


Memorial Day Weekend 2010. Alice is a big, beautiful, dark female Arizona black rattlesnake with mustard yellow scales outlining each dorsal blotch. We first encountered her ~20 meters from a known rattlesnake den. Several of our party walked right by before we discovered her, coiled at an opening beneath a boulder, without her rattling or… Read More