Reptile Supervisor Bradley Lawrence guest-blogs on ZooHoo!
This guest-blog is part of a series. Click here to read Part I!
Springtime is never boring on the rolling plains of Texas. Our latest expedition to the Rolling Plains Quail Research Ranch in search of Texas horned lizards (aka “horny toads”) started a little rough. We arrived just in time to get an hour or so of searching in before we were forced to call it quits for the evening due to weather. The storms were severe enough to produce baseball-size hail and at last one tornado within 5 miles of us. We spent a little time in the much appreciated storm shelter.
The next morning was very wet, windy and a little cold – not a good combination for finding Texas horned lizards, but the afternoon finally warmed up, and the day turned out to be very nice. We’ve found that when conditions are sub-optimal, we tend to see only young lizards and old lizards that are thin, injured or less than prime specimens. My personal feeling is that the adult animals that are in good condition simply wait bad days out until a better one comes along. They can afford not to feed for a few days or even weeks at a time.
When we catch a lizard, we immediately start to log a GPS location. While this is happening, we measure the total length of the animal, weigh them, and record the surface temperature and UV index at the point where we initially spotted the lizard. A small electronic “chip” is placed in the lizard so we can track home range, growth, and population density. These and some other observations are all recorded in a handheld computer/GPS. This whole process takes about 5 min. Then the lizard is released, no worse for wear, right where it was found.
Our lizard sightings are getting more frequent as spring turns into summer – these little lizards are doing very well here. We even found our first gravid (that means pregnant or egg-carrying in reptile-speak) lizard of the season. We love to see reproduction in the wild! A large female is able to lay 40+ eggs at a time. We will start to see this year’s hatchlings toward the end of July and into August.